Category Archives: Activities

2024

Awards

Nan Xue　40th International Conference on Thermoelectrics (ICT2024)
The ICT2024 Outstanding Poster Prize
“First-Principles Study for High Thermoelectric Performance Iron-based Half Heusler Compounds with Thermodynamic and Mechanical Stability”

Papers

“Insights into enhanced thermoelectric performance of the n-type Mg₃Sb₂-based materials by amphoteric Al doping“
Qiang Zhang, Huijun Li, Nagendra S. Chauhan, Lifei Wang, Wenhao Fan, Shaoping Chen, Jianfeng Fan, Yuzuru Miyazaki
Materials Today Energy 44(4), 101656 (2024).
“Ultralow thermal conductivity and high ZT of Cu₂Se-based thermoelectric materials mediated by TiO_2-n nanoclusters“
Jincheng Yu, Xiaodong Liu, Haihua Hu, Yilin Jiang, Hua-Lu Zhuang, Hezhang Li, Bin Su, Jing-Wei Li, Zhanran Han, Zhengqin Wang, Lu Chen, Kei Hayashi, Yuzuru Miyazaki, B. Layla Mehdi, Jing-Feng Li
Joule, 8(9), 2652 (2024).
“ Sr-substitution effects on crystal structure and thermoelectric properties of misfit layered cobaltate, [Ca₂CoO₃]_pCoO₂“
Yoshimi Shimizu, Kei Hayashi and Yuzuru Miyazaki
Solid State Science 152, 107536 (2024).

Invited talks

14th International Conference on Ceramic Materials and Components for Energy and Environmental Systems (CMCEE14) (August 18-22, Budapest)

“Laqce defect engineering for high-performance Mg₂Sn and Mg₂Ge thermoelectric single crystals”
Kei Hayashi (Invited lecture)

40th International Conference on Thermoelectrics (June 30- July 4, Krakow)

“Bond-engineering to Develop High-performance Fe-based Half-Heusler Alloys”
Yuzuru Miyazaki (Invited lecture)

Europian Materials Research Society 2024 Spring Meeting (May 27-31, Strasbourg)

“Fe-based Half Heusler Thermoelectric Materials”
Yuzuru Miyazaki (Invited lecture)

Conferences

40th International Conference on Thermoelectrics (June 30- July 4, Krakow)

“Enhanced p-type thermoelectric properties of Mg₂Ge single crystals via lattice defect engineering”
K. Hayashi, H. Tajeuchi, Z. Huang, N. S. Chauhan, Q. Zhang, X. Nan, H. Li, J. Pei, J. Dong, B.-P. Zhang, J.-F. Li, Y. Miyazaki (Oral)
“Enhancement of Thermoelectric Properties in p-type Iron-based Half-Heusler VFeSb Alloys via Titanium Alloying”
Z. Huang, K. Hayashi, X. Nan, H. Konishi, Y. Miyazaki (Oral)
“First-Principles Study for High Thermoelectric Performance Iron-based Half-Heusler Compounds with Thermodynamic and Mechanical Stability”
X. Nan, Z. Huang, K. Hayashi, H. Konishi, Y. Miyazaki (Poster)

2023

Awards

A paper on manganese silicide was selected as a Cover Letter for Applied Energy Materials. (December, 2023)
Gakuto Kanno　The 19th European Conference on Thermoelectrics (ECT2023)
The Award for Outstanding Poster Presentation
“Preparation and thermoelectric properties of nonstoichiometric full‐Heusler Mn_2+xV_1-xAl alloys”
A paper on manganese silicide and Mechanical Performance was selected as a Cover Letter for Applied Energy Materials. (April, 2023)

Papers

“Understanding Anisotropy and Its Relations with Sintering Conditions on Thermoelectric Transport Properties of n-Type Mg₃Sb₂-Based Materials”
Xingchen Gao, Lianglu Hu, Nagendra Singh Chauhan, Zhaohui Shan, Qiang Zhang, Jianfeng Fan and Yuzuru Miyazaki
ACS Applied Energy Materials, 7(3), 862 (2024).
“Odd-Stoichiometry and Secondary Phase Relations in Higher Manganese Silicides”
Nagendra Singh Chauhan, Shivalingam Goud Sara, Amrita Bhattacharya, Takao Mori and Yuzuru Miyazaki
Advanced Functional Materials, 34(17), 2313948 (2024).
“Enhancement of the thermoelectric performance of half-metallic full-Heusler Mn2VAl alloys via antisite defect engineering and Si partial substitution”
Hezhang Li, Kei Hayashi, Zhicheng Huang, Hiroto Takeuchi, Gakuto Kanno, Jing-Feng Li and Yuzuru Miyazaki
Journal of Materiomics, 10(2), 511 (2023).
“Bi-Deficiency Leading to High-Performance in Mg3(Sb,Bi)2-Based Thermoelectric Materials”
Jing-Wei Li, Weishu Liu, Wei Xu, Hua-Lu Zhuang, Zhijia Han, Feng Jiang, Peng Zhang, Haihua Hu, Hanbin Gao, Yilin Jiang, Bowen Cai, Jun Pei, Bin Su, Qian Li, Kei Hayashi, Hezhang Li, Yuzuru Miyazaki, Xingzhong Cao, Qiang Zheng and Jing-Feng Li
Advanced Materials, 35(23), 2209119 (2023).
“Higher manganese silicides: A Nowotny chimney ladder phase for thermoelectric applications”
Nagendra Singh Chauhan and Yuzuru Miyazaki
Chemical Physics Reviews, 4, 041304 (2023).
“Discordant Doping and Labile Silicon Atoms in Higher Manganese Silicide”
Nagendra Singh Chauhan and Yuzuru Miyazaki
ACS Applied Energy Materials, 6(23), 11828 (2023).
“Graphene-assisted synergistic electronic DOS modulation and phonon scattering to improve the thermoelectric performance of Mg₃Sb₂-based materials”
Qiang Zhang, Jiadang Li, Nagendra S. Chauhan, Lifei Wang, Zhicheng Huang, Wenhao Fan, Kei Hayashi, Shaoping Chen, Jianfeng Fan and Yuzuru Miyazaki
Journal of Materials Chemistry A, 11, 18811 (2023).
“Lattice anharmonicity in charge compensated higher manganese silicide single crystals”
Nagendra Singh Chauhan, Ichiro Ono, and Yuzuru Miyazaki
Journal of Materials Chemistry A, 11, 19107 (2023).
“Charge-Compensated (V, Ru) Co-Substitution in Higher Manganese Silicide Single Crystals for Enhanced Thermoelectric and Mechanical Performance”
Nagendra Singh Chauhan, Ichiro Ono, Kei Hayashi, and Yuzuru Miyazaki
ACS Applied Energy Materials 2023, 6(7), 3714 (2023).
“Effects of Oxygen on Lattice Defects in Single-Crystalline Mg₂Si Thermoelectrics”
Kei Hayashi, Sota Kawamura, Yusuke Hashimoto, Noboru Akao, Zhicheng Huang, Wataru Saito, Kaichi Tasaki, Koichi Hayashi, Tomohiro Matsushita and Yuzuru Miyazaki
Nanomaterials 2023, 13(7), 1222 (2023).

Invited talks

The 15th Pacific Rim Conference of Ceramic Societies (PACRIM15) & The 13th Int’l Conference on High-Performance Ceramics (CICC-13) (5-9 Nobember 2023, Shenzhen)

“Lattice Defect Engineering to Develop Highly-efficient Thermoelectric Single Crystals”
Kei Hayashi (Invited lecturer)

International Workshop Thermoelectric Materials: from materials chemistry and physics to devices (IWT2023)(April 12-14, 2023, Caen)

Incommensurate Nowotny Chimney-ladder Phases – Potential Thermoelectric Materials
Y. Miyazaki, N. S. Chauhan, T. Kurosawa, and K. Hayashi (Invited lecture)

8th Annual Conference of Analytix-2023 (17-19 May 2023, Osaka)

“Superspace Approach to the Incommensurate Crystal Structure of Higher Manganese Silicide-Based Thermoelectric Materials”
Y. Miyazaki (Invited lecture)

Conferences

The 15th Pacific Rim Conference of Ceramic Societies (PACRIM15) & The 13th Int’l Conference on High-Performance Ceramics (CICC-13) (5-9 Nobember 2023, Shenzhen)

“Enhancing Thermoelectric Properties of P-type Mg₂Sn Single Crystals through Li/Si Co-Doping and Introduction of Lattice Defects”
Z. Huang, K. Hayashi, Y. Miyazaki (Oral)
“High Temperature X-ray Diffraction Study on Incommensurate Composite Crystal (Mn, Fe, V)Si_γ“
T. Chiba, K. Hayashi, Y. Miyazaki (Oral)

The 19th European Conference on Thermoelectrics (ECT2023) (17-21 September 2023, Prague)

“Single‐phase synthesis and thermoelectric properties of nowotny chimney‐ladder FeGe_γ“
T. Kurosawa, K. Hayashi, Y. Miyazaki (Poster)
“Preparation and thermoelectric properties of nonstoichiometric full‐Heusler Mn_2+xV_1-xAl alloys”
G. Kanno, K. Hayashi, Z. Huang, H. Li, Y. Miyazaki (Poster)
“Analysis of crystal structure and Thermoelectric properties of Sr‐substituted [Ca₂CoO₃]_pCoO₂“
Y. Shimizu, K. Hayashi, Y. Miyazaki (Oral)

The 39th Annual International Conference on Thermoelectrics (ICT2023) (21-25 June 2023, Seatle)

Advancing the thermoelectric performance of single crystals: a case study of p-type Mg₂Sn through lattice defect engineering”
K. Hayashi, Z. Huang, W. Saito, J. Pei, J.F. Li, Y. Miyazaki (Oral)
“Boron doping in n-type and p-type Mg₂Sn on the generation of lattice defects leading to improved thermoelectric properties”
Z. Huang, K. Hayashi, W. Saito, H. Takeuchi, Y. Miyazaki (Oral)

Thesis

Master

“Development of P-type Mg₂Sn Single Crystals with Multi-Scale Lattice Defects for Thermoelectric Application”

2022

Awards

We have selected our article about p-type Mg₂Sn Thermoelectric materials on 、the back Cover of the Journal of Materials Chemistry A. (February 2023)

Papers

“Enhanced thermoelectric performance of p-type Mg₂Sn single crystals via multi-scale engineering”
Zhicheng Huang, Kei Hayashi, Wataru Saito, Jun Pei, Jing-Feng Li and Yuzuru Miyazaki
Journal of Materials Chemistry A, 11, 2652 (2023).
” Anisotropic correlations in higher manganese silicides”
Nagendra S. Chauhan, Ichiro Ono, Kei Hayashi, Yuzuru Miyazaki
Journal of Alloys and Compounds, 935, 167983 (2023).
“Iron‐based Semiconducting Half‐Heusler Alloys for Thermoelectric Applications”
N. S. Chauhan and Y. Miyazaki
ChemNanoMat 9 (1), e202200403 (2022)
“Low Lattice Thermal Conductivity in a Wider Temperature Range for Biphasic-Quaternary (Ti, V)CoSb Half-Heusler Alloys”
Nagendra S. Chauhan, Dipanwita Bhattacharjee, Tanmoy Maiti, Yury V. Kolen’ko, Yuzuru Miyazaki, and Amrita Bhattacharya
ACS Applied Materials & Interfaces 2022, 14, 54736 (2022)
“Relevance of Solidification Kinetics for Enhanced Thermoelectric Performance in Al-Doped Higher Manganese Silicides”
Nagendra S. Chauhan, Ichiro Ono, Kei Hayashi, and Yuzuru Miyazaki
ACS Applied Materials & Interfaces, 14, 51983 (2022).
“A mechanistic view of defect engineered VFeSb half-Heusler alloys”
Nagendra Singh Chauhan, Yuzuru Miyazaki
Materials Advances, 3, 8498 (2022).
“Enhancement of thermoelectric performance of Mg₂Sn single crystals via lattice-defect engineering”
Kei Hayashi
JSAP Review, 2022, 220403 (2022).
“Enhancement of thermoelectric properties at room temperature through isoelectronic ruthenium-substitution in n-type half-Heusler VFeSb compounds”
Yi Huang, Kei Hayashi, Yuzuru Miyazaki
Acta Materialia, 237, 118186 (2022).
“Contrasting role of bismuth doping on the thermoelectric performance of VFeSb half-Heusler”
Nagendra Singh Chauhan, Yuzuru Miyazaki
Journal of Alloys and Compounds, 908, 164623 (2022).
“Low lattice thermal conductivity and microstructural evolution in VFeSb half-Heusler alloys”
Nagendra Singh Chauhan, Yuzuru Miyazaki
Materialia, 22, 101430(2022).

Invited talks

SIPS2022 Mizutani International Symposium (27-30 November 2022, Phuket)

“Higher Manganese Silicides: Incommensurability and Thermoelectric Properties”
Yuzuru Miyazaki (Invited lecture)

Conferences

33rd International Photovoltaic Science and Engineering Conference (PVSEC-33) (13-17 November 2022, Nagoya)

“Carrier density control of CrSi₂ partially substituted with Mn”
K. Tasaki, K. Hayashi, and Y. Miyazaki (Poster)
“Preparation of (Mn, Fe, V)Si_γ Single Crystals for Infrared Absorption Optoelectronics”
T. Chiba, K. Hayashi, and Y. Miyazaki (Poster)

18th European Conference on Thermoelectrics (ECT’22) (14-16 Septemper 2022, Barcelona)

“Reduction of Thermal Conductivity of Mg₂Sn Single Crystal via Lattice-Defect Engineering through Chemical-Pressure Control”
K. Hayashi, W. Saito, Z. Huang, K. Sugimoto, K. Ohoyama, N. Happo, M. Harada, K. Oikawa, Y. Inamura, K. Hayashi, T. Miyazaki, and Y. Miyazaki (Oral)
“Realising enhanced thermoelectric performance in partially substituted higher manganese silicides crystals”
N. S. Chauhan, I. Ono, K. Hayashi, and Y. Miyazaki (Oral)
“Point Defects and Thermoelectric Properties of Melt‐grown Mg₂Ge Single Crystals”
H. Takeuchi, Z. Huang, K. Hayashi, and Y. Miyazaki (Poster)

The 6th Asia-Pacific Conference on Semiconducting Silicides and Related Materials, 2022 (APAC-Silicide 2022) (30 July – 1 August 2022, Online)

“Partially compensated (Ru, V) co-doped higher manganese silicide single crystals”
N. S. Chauhan, I. Ono, K. Hayashi, and Y. Miyazaki (Oral)

Virtual Conference on Thermoelectrics 2022 (VCT 202) (20-22 July 2022, Online)

“Preparation and High-Temperature Thermoelectric Properties of Textured Cobaltate Ceramics”
Y. Shimizu, K. Hayashi, and Y. Miyazaki (Poster)

Thesis

Doctor

“Development of P-type Mg₂Sn Single Crystals with Multi-Scale Lattice Defects for Thermoelectric Application”

2021

Papers

Realizing p-type Mg₂Sn Thermoelectrics via Ga-Doping and Point Defect Engineering
Zhicheng Huang, Kei Hayashi, Wataru Saito, and Yuzuru Miyazaki
ACS Applied Energy Materials, 4, 13044 (2021).
Outstanding thermoelectric performance of n-type half-Heusler V(Fe_1-xCo_x)Sb compounds at room-temperature
Yi Huang, Kei Hayashi, Yuzuru Miyazaki
Acta Materialia, 215, 117022 (2021).
Incommensurately modulated crystal structure of α’ (O’3)-type sodium cobalt oxide Na_xCoO₂ (x ～ 0.78)
Y. Miyazaki, N. Igawa and K. Yubuta
Acta Crystallographica B, 77, 371 (2021).
Chemical-Pressure-Induced Point Defects Enable Low Thermal Conductivity for Mg₂Sn and Mg₂Si Single Crystals
W. Saito, K. Hayashi, Z. Huang, K. Sugimoto, K. Ohoyama, N. Happo, M. Harada, K. Oikawa, Y. Inamura, K. Hayashi, T. Miyazaki, and Y. Miyazaki
ACS Applied Energy Materials, 4, 5123 (2021).
Crystal structure, microstructure and electronic transport properties of β-Zn₄Sb₃ thermoelectrics: effects of Zn intercalation and deintercalation
S.Yoshioka, K.Hayashi, A.Yokoyama, W.Saito, Y.Miyazaki
Materials Today Energy, 21, 100723 (2021).

Invited talks

Materials Research Meeting 2021 (MRM2021) (13-16 December 2021, Yokohama)

“Crystal Structure and Thermoelectric Properties of Incommensurate Composite Crystal MnSi_γ (γ~1.7)”
Y. Miyazaki, Hiroki Nagai, Haruki Hamada, Yuta Kikuchi, Kei Hayashi (Invited lecture)

1st Japan France Virtual Workshop on thermoelectrics (VWT2021) (27-30 September 2021, online)

“Point defect engineering enhances thermoelectric performance of Mg₂Si and Mg₂Sn single crystals,”
K. Hayashi (Invited lecture)

Conferences

Materials Research Meeting 2021 (MRM2021) (13-16 December 2021, Yokohama)

“Crystal structure, microstructure and thermoelectric properties of melt-grown β-Zn₄Sb₃“
K. Hayashi, S. Yoshioka, T. Chiba, Y. Miyazaki (Oral)

Thesis

Doctor

“Crystal Structure, Electric Structure, and Thermoelectric Properties of Half-Heusler VFeSb-Based Compounds”
“Electronic Structure and Thermoelectric Properties of P-type Full-Heusler Alloys”

2020

Awards

Zhichao Liu The 5th Asian Conference on Thermoelectrics (ACT5) &The 6th Southeast Asia Conference on Thermoelectrics (SACT6) The Best Poster Presentation (17 December 2020)
“Preparation, crystal structure and thermoelectric performance of p-type quaternary half-Heusler Ti(Fe_0.5+xNi_0.5-x)Sb compounds”
Our paper on crystal structure and thermoelectric properties of β- and γ-Zn₄Sb₃ was selected as Outside front cover of Journal of Materials Chemistry C. (July, 2020)

Papers

Effects of Disorder on the Electronic Structure and Thermoelectric Properties of an Inverse Full-Heusler Mn₂CoAl Alloy
Hezhang Li, Kei Hayashi, Yoshimi Nagashima, Shun Yoshioka, Jinfeng Dong, Jing-Feng Li, and Yuzuru Miyazaki
Chemistry of Materials, 33, 2543-2547 (2021)
High-Density Frenkel Defects as Origin of N-Type Thermoelectric Performance and Low Thermal Conductivity in Mg₃Sb₂‐Based Materials
Tsutomu Kanno, Hiromasa Tamaki, Masato Yoshiya, Hiroshi Uchiyama, Sachiko Maki, Masaki Takata and Yuzuru Miyazaki
Advanced Functional Materials, 31, 2008469 (2021)
“Enhanced thermoelectric performance in MnTe due to doping and in-situ nanocompositing effects by Ag₂S addition”
Jinfeng Dong, Jun Pei, Kei Hayashi, Wataru Saito, Hezhang Li, Bowen Cai, Yuzuru Miyazaki and Jing-Feng Li
Journal of Materiomics, 7, 577-584 (2021)
“Relationships between crystallite size and thermoelectric properties of nano-structured CrSi₂ prepared by the reduction-diffusion and spark plasma sintering methods”
Hayato Nakasawa, Tomohisa Takamatsu, Kei Hayashi and Yuzuru Miyazaki
Journal of Alloys and Compounds, 861, 157967 (2021)
“Enhancing the Thermoelectric Performance of Mg₂Sn Single Crystals via Point Defect Engineering and Sb Doping”
Wataru Saito, Kei Hayashi, Zhicheng Huang, Jinfeng Dong, Jing-Feng Li and Yuzuru Miyazaki
ACS Applied Materials & Interfaces, 12, 57888 (2020)
“Tailoring the thermoelectric and structural properties of Cu-Sn based thiospinel compounds [CuM_1+xSn_1-xS₄ (M = Ti, V, Cr, Co)]”
Cédric Bourgès, Bhuvanesh Srinivasan, Bruno Fontaine, Philipp Sauerschnig, Alizée Minard, Jean-François Halet, Yuzuru Miyazaki, David Berthebaud and Takao Mori
Journal of Materials Chemistry C 8, 16368 (2020)
“Crystal structure, electronic structure and thermoelectric properties of β- and γ-Zn₄Sb₃ thermoelectrics: a (3 + 1)-dimensional superspace group approach”
Shun Yoshioka, Kei Hayashi, Aisaku Yokoyama, Wataru Saito, Hezhang Li, Tomohisa Takamatsu and Yuzuku Miyazaki
Journal of Materials Chemistry C 8, 9205-9212 (2020).
“Electron Conduction Mechanism of Deficient Half-Heusler VFeSb Compound Revealed by Crystal and Electronic Structure Analyses”
Yi Huang, Kei Hayashi, and Yuzuku Miyazaki
Chemistry of Materials 32, 5173-5181 (2020).
“Distinct impact of order degree on thermoelectric power factor of p-type full-Heusler Mn₂VAl compounds”
Hezhang Li, Kei Hayashi, Jinfeng Dong, Jing-Feng Li and Yuzuku Miyazaki
Materials Research Express 7, 055503 (2020).

Books

“Higher manganese silicides”
Y. Miyazaki
“Thermoelectric Energy Conversion Theories and Mechanisms, Materials, Devices, and Applications“ chapter 2.15
ed. R. Funahashi, Woodhead Publishing Series in Electronic and Optical Materials, 2021.
“Magnetic Full-Heusler Compounds for Thermoelectric Applications”
K. Hayashi, H. Li, M. Eguchi, Y. Nagashima and Y. Miyazaki
“Magnetic Materials and Magnetic Levitation” chapter 4
ed. D. R. Sahu, IntechOpen, 2020.
“Thermoelectric properties of Mg₂Si and its derivatives: effects of lattice defects and secondary phases”
K. Hayashi, Y. Miyazaki, W. Saito, M. Kubouchi, Y. Ogawa, S. Suzuki, Y. Hayashibara and I. Ando
“Thermoelectric Materials -Principles and Concepts for Enhanced Properties-“ chapter 5
eds. K. Kurosaki, Y. Takagiwa and X. Shi, De Gruyter, 2020.

Invited talks

The 5th Asian Conference on Thermoelectrics (ACT5) &The 6th Southeast Asia Conference on Thermoelectrics (SACT6) (17, 18 December 2020, online)

“Understanding Detailed Crystal Structures for Improving Thermoelectric Properties of Silicide-based Materials”
Y. Miyazaki, H. Nagai, H. Nkasawa, W. Saito, M. Kubouchi, T. Takamatsu and K. Hayashi (Invited lecture)

Conferences

The 5th Asian Conference on Thermoelectrics (ACT5) &The 6th Southeast Asia Conference on Thermoelectrics (SACT6) (17 December 2020, online)

“Local Structure and Thermoelectric Properties of Boron-Doped Mg₂Si and Mg₂Sn Single Crystals”
K. Hayashi, W. Saito, K. Sugimoto, S. Uchi, Y. Kanazawa, Y. Fukumoto, T. Yamamoto, K. Ohyama, K.i Hayashi, N. Happo, M. Hatada, K. Oikawa, Y. Inamura and Y. Miyazaki (Oral)
“Effect of disorder on electronic structure and thermoelectrical properties of inverse full-Heusler Mn₂CoAl alloys”
H. Li，K. Hayashi，Y. Nagashima, S. Yoshioka, J. Dong, J. Li and Y. Miyazaki (Oral)
“Influences of Mg vacancy and Ga atoms in p-type Mg₂Sn_1-xGa_x“
Z. Huang, K. Hayashi, W. Saito, J. Dong, J. Li and Y. Miyazaki (Oral)
“Preparation, crystal structure and thermoelectric performance of p-type quaternary half-Heusler Ti(Fe_0.5+xNi_0.5-x)Sb compounds”
Z. Liu，Y. Huang, K. Hayashi and Y. Miyazaki (Poster)
“Design and evaluation of the C40-type silicide thermoelectric modules”
M. Ryu, T. Takamatsu, K. Hayashi and Y. Miyazaki (Poster)

The 2nd International Conference on Metals and Alloys (CMA 2020)
(6-9 December 2020, online)

“Effects of V-substitution on Thermoelectric Properties of Pseudogap Intermetallic TiNiSi Compound”
Y. Huang，H. Nagai, K. Hayashi，Y. Miyazaki (Oral)

The 2020 Magnetism and Magnetic Materials Virtual Conference(MMM2020)
(2-6 November 2020, online)

“Preparation and Thermoelectric Properties of Mn2CoAl Inverse Full-Heusler Alloy”
H. Li，K. Hayashi，Y. Nagashima, Y. Miyazaki (Poster)

Virtual Conference on Thermoelectrics (21-23 July 2020, online)

“Enhancing Thermoelectric Performance of Mg₂Sn Single Crystals via Point Defect Engineering and Sb-doping”
W. Saito, K. Hayashi, Y. Miyazaki (Oral)
“Enhanced Thermoelectric Performance in N-type Half-Heulser VFeSb Compounds with Cobalt-substitution”
Y. Huang, K. Hayashi, Y. Miyazaki (Oral)

Thesis

Master

“Preparation, CrystalStructure andThermoelectricProperties of QuaternaryTi(Fe,Ni)Sb-based Half-Heusler Compounds”
“Fabrication and evaluation of the C40-type silicide thermoelectric modules”

Doctor

“Enhancing Thermoelectric Efficiency of Mg₂Sn Single Crystals via Point Defect Engineering”

2019

Awards

Yi Huang　38th International and 4th Asian Conference on Thermoelectrics (ICT & ACT 2019) ICT2019 Poster Award (July, 2019)
“Preparation, crystal structure and thermoelectric properties of Ru substituted half Heusler type VFeSb”
Our project have been approved bythe 2019 Tohoku University-Tsinghua University Joint Research Fund (April, 2019)

Papers

“Preparation, thermoelectric properties, and crystal structure of boron-doped Mg₂Si single crystals”
K. Hayashi, W. Saito, K. Sugimoto, K. Ohoyama, K. Hayashi, N. Happo, M. Harada, K. Oikawa, Y. Inamura, and Y. Miyazaki
AIP Advances 10, 035115 (2020).
“Crystal structure and thermoelectric properties of partially-substituted melt-grown higher manganese silicides (Progress Review)”
Y. Miyazaki
Japanese Journal of Applied Physics 59, SF0802 (2020).
“Control of the Thermoelectric Properties of Mg₂Sn Single Crystals via Point-Defect Engineering”
W. Saito, K. Hayashi, J. Dong, J.-F. Li, and Y. Miyazaki
Scientific Reports, 10, 2020 (2020).
“Design and power generation of tilted Cu/Fe₂V(Al_0.9Si_0.1) multilayers via the transverse thermoelectric effect”
N. Kodaira, Y. Miyazaki, and K. Hayashi
Journal of Applied Physics, 126, 045108 (2019).
“Reducing Lattice Thermal Conductivity of MnTe by Se Alloying toward High Thermoelectric Performance”
J. Dong, F.-H Sun, H. Tang, K. Hayashi, H. Li, P.-P. Shang, Y. Miyazaki, and J.-F. Li.
ACS Applied Materials & Interfaces, 11, 28221 (2019).
“Lattice dynamics and lattice thermal conductivity of CrSi₂ calculated from first principles and the phonon Boltzmann transport equation”
H. Nakasawa, K. Hayashi, T. Takamatsu, and Y. Miyazaki
Journal of Applied Physics, 126, 025105 (2019).
“Optimised thermally driven molecular stability of an SCO metal complex for TEC Seebeck generation enhancement”
M.M.I. Megat Hasnan, S. Mohd Said, M.F. Mohd Sabri, S.A. Mat Hussin, N. Abdullah, N.M.J Nik Ibrahim, Y. Miyazaki, M.F. Mohd Salleh, and N. Mohd Shah.
RSC Advances, 9, 10626 (2019).
“Aqueous Chemical Synthesis and Consolidation of Size-Controlled Bi₂Te₃ Nanoparticles for Low-Cost and High-Performance Thermoelectric Materials”
T. Nakamoto, S. Yokoyama, T. Takamatsu, K. Harata, K. Motomiya, H. Takahashi, Y. Miyazaki, and K. Tohji.
Journal of Electronic Materials, 48, 2700 (2019).

Invited talks

17th European Conference on Thermoelectrics (ECT2019)(23-25 September 2019, Cyprus)

“Understanding Detailed Crystal Structures to Further Improve Thermoelectric Properties of Silicide-based Materials”
Y. Miyazaki, H. Nagai, W. Saito, K. Hayashi (Invited lecture)

5th Asia-Pacific conference on semiconducting silicides and related materials (APAC-SILICIDE 2019) (20-23 July 2019, Miyazaki)

“Recent Progress in Silicide Thermoelectric Materials”
Y. Miyazaki (Invited lecture)

European Materials Research Society (E-MRS) 2019 Spring Meeting (27-31 May 2019, Nice)

“Domain Separation in Manganese Siliside Thermoelectric Material”
Y. Miyazaki, H. Nagai, Y. Kawasaki, K. Hayashi, K. Yubuta (Invited lecture)

Conferences

Materials Research Meeting 2019 (10-14 December 2019, Yokohama)

“Ru-substitution effects on the crystal and electronic structures, and thermoelectric poperties of half-Heusler type VFeSb compounds”
Y. Huang, K. Hayashi, Y. Miyazaki (Oral)
“Determination of dopant position of thermoelectric material B-doped Mg₂Si by white neutron holography”
K. Sugimoto, S. Uechi, Y. Kanazawa, Y. Fukumoto, T. Yamamoto, K. Ohoyama, K. Hayashi, N. Happo, M. Harada, K. Oikawa, Y. Inamura, K. Hayashi, W. Saito, Y. Miyazaki (Poster)

14th International Conference on the Structure of Non-Crystalline Materials (NCM14) (3-8 November 2019, Kobe)

“Thermoelectric Properties and Local Structure of Boron-Doped Mg₂Si and Mg₂Sn”
Kei Hayashi, Wataru Saito, Yuzuru Miyazaki, Kazuya Sugimoto, Syouichi Uechi, Yuki Kanazawa, Yohei Fukumoto, Takayoshi Yamamoto, Kenji Ohoyama, Kouichi Hayashi, Naohisa Happo, Masahide Harada, Kenichi Oikawa, Yasuhiro Inamura (Oral)

5th Asia-Pacific conference on semiconducting silicides and related materials (APAC-SILICIDE 2019) (20-23 July 2019, Miyazaki)

“Cross-sectional characterization of Mg2Si -Ni interface compacted by SPS method at 800°C”
T. Ishii, H. Sugawara, M. Tokuda, H. Sato, T. Hanajiri, H. Shimoshige, S. Kurosu, K. Hayashi, I. Ando, W. Saito, and Y. Miyazaki (Poster)

38th International and 4th Asian Conference on Thermoelectrics (ICT & ACT 2019) (30 June – 5 July 2019, Gyeongju)

“Preparation and Thermoelectric Properties of Mn₂VAl Full Heusler Alloys with Different Order Degree”
H. Li, K. Hayashi, Y. Miyazaki (Oral)
“Crystal and electronic structures of the half Heusler type VFeSb compounds”
Y. Huang, S. Maki, K. Hayashi, Y. Miyazaki (Oral)
“Investigation on lattice defects in Mg₂Sn single crystals prepared under different Ar partial pressure”
W. Saito, K. Hayashi, Y. Miyazaki (Oral)
“Computer simulation of thermoelectric properties for tilted multilayer devices based on the off diagonal thermoelectric effect”
D. Sakuraba, N. Kodaira, K. Hayashi, Y. Miyazaki (Poster)
“Thermoelectric properties and local structure of B doped Mg₂Si single crystal”
K. Hayashi, W. Saito, Y. Miyazaki, K. Sugimoto, S. Uechi, Y. Kanazawa, Y. Fukumoto,
T. Yamamoto, K. Ohyama, K. Hayashi, N. Happo, M. Harada, K. Oikawa, Y. Inamura (Poster)
“Thermoelectric Properties of Strontium Titanium Oxyhydrides”
D. Fukutome, T. Takamatsu, K. Hayashi, Y. Miyazaki (Poster)
“Preparation, crystal structure and thermoelectric properties of Ru substituted half Heusler type VFeSb”
Y. Huang, K. Hayashi, Y. Miyazaki (Poster)
“Crystal structure evolution of Zn₄Sb₃ during melt grown process”
S. Yoshioka, K. Hayashi, Y. Miyazaki (Poster)

Thesis

Master

“Thermoelectric Properties of C40-Type Mn-Cr-Si-Al Compounds”
“Simulation of Power Generation and Module Fabrication for Tilted Multilayer Thermoelectric Devices”
“Crystal Structure and ThermoelectricProperties of Higher ManganeseSilicides Cosubstituted with V and Ge”
“Preparation and Characterization of(Mn,Fe)Si_γ Thin Films Grown by PulsedLaser Deposition Method”

Doctor

“”

2018

Awards

Yi Huang, 37th International and 16th European Conference on Thermoelectrics (ICT & ECT 2018) ITS Poster Award (July, 2018)
“Effects of Cu-substitution on Theremoelectric Properties of Pseudogap Ternary Intermetallic Compound TiNiSi”
Wataru Saito, 37th International and 16th European Conference on Thermoelectrics (ICT & ECT 2018) ITS Poster Award (July, 2018)
“Effect of Lattice Defects on the Seebeck Coefficient of Mg₂Sn”
Our paper on pyroelectric energy harvesting using BaTiO₃ was selected as Back Picture of Physica Status Solidi (a). (June, 2018)

Papers

“Effects of Cobalt Substitution on Crystal Structure and Thermoelectric Properties of Melt-Grown Higher Manganese Silicides”
H. Nagai, H. Hamada, K. Hayashi, and Y. Miyazaki
Journal of Electronic Materials, 48, 1902 (2019).
“Preparation and thermoelectric properties of pseudogap intermetallic (Ti_1-xV_x)NiSi solid solutions”
Y. Huang, H. Nagai, K. Hayashi, and Y. Miyazaki
Journal of Alloys and Compounds, 771, 111 (2019).
“Role of cobalt for titanium substitution on the thermoelectric properties of the thiospinel CuTi₂S₄“
C. Bourgès, V. P. Kumar, H. Nagai, Y. Miyazaki, B. Raveau, and E. Guilmeau
Journal of Alloys and Compounds, 781, 1169 (2019).
“Improved thermoelectric performance from CrSi₂ by Cu substitution into Si sites”
H. Nagai, T. Takamatsu, Y. Iijima, K. Hayashi, and Y. Miyazaki
Japanese Journal of Applied Physics, 57, 121801 (2018).
“Preparation and optical properties of higher manganese silicide, (Mn,Fe)Si_γ, thin films”
K. Hayashi, K. Ishii, C. Kawasaki, R. Honda, and Y. Miyazaki
Applied Surface Science, 458, 700 (2018).
“Fabrication and thermoelectric properties of Al/Mg₂Si composite materials”
Y. Hayashibara, K. Hayashi, I. Ando, M. Kubouchi, Y. Ogawa, W. Saito, and Y. Miyazaki
Materials Transactions, 59, 1041 (2018).
“Crystal Structure and Thermoelectric Properties of Lightly Substituted Higher Manganese Silicides”
Y. Miyazaki, H. Hamada, H. Nagai, K. Hayashi
Materials, 11, 926 (2018).
“Pyroelectric Energy Harvesting Using Ferroelectric Ba_1-xCa_xTiO₃“
K. Hayashi, E. Aikawa, T. Ueno, T. Kajitani, and Y. Miyazaki
Physica Status Solidi (a), 215, 1701002 (2018).
“Thermoelectric Properties of Mo and Ge co-substituted CrSi₂“
H. Nakasawa, T. Takamatsu, Y. Iijima, K. Hayashi, and Y. Miyazaki
Transactions of the Materials Research Society of Japan, 43, 85 (2018).
“Design and fabrication of full-Heusler compound with positive Seebeck coefficient as a potential thermoelectric material”
H. Li, K. Hayashi, Y. Miyazaki
Scripta Materialia, 150, 130 (2018).

Invited talks

XVI Interstate Conference on Thermoelectrics and Their Applications (ISCTA 2018) (October 8-10 2018, St. Petersburg, Russia)

“Recent Progress in Manganese Silicide Thermoelectric Material”
Y. Miyazaki (Invited lecture)

International Conference on Ceramic Materials and Components for Energy and Environmental Applications (CMCEE 2018) (July 22-27 2018, Singapore)

“Thermoelectric properties of vanadium-substituted higher manganese silicides”
Y. Miyazaki (Invited lecture)

37th International and 16th European Conference on Thermoelectrics (ICT & ECT 2018) (July 1-5 2018, Caen)

“Recent Progress in Silicide-based Thermoelectric Materials”
Y. Miyazaki, H. Nagai, H. Nakasawa, W. Saito, Y. Kawasaki, T. Takamatsu, K. Hayashi (Invited lecture)

EMN Greece Meeting 2018 (May 14-18 2018, Heraklion, Greece)

“Design of tilted-multilayer power generation devices using the transverse thermoelectric effect”
Y. Miyazaki, N. Kodaira, Y. Oide, K. Hayashi (Invited lecture)

Conferences

ISSP – J-PARC Joint Workshop on Science Frontier by Neutron Scattering ～ The 17th Korea-Japan meeting on Neutron Science ～ (January, 2019, Ohta)

“Determination of dopant position of thermoelectric material B-doped Mg₂Si by white neutron holography”
K. Sugimoto, S. Uechi, Y. Kanazawa, Y. Fukumoto, T. Yamamoto, K. Ohoyama, K. Hayashi, N. Happo, M. Harada, K. Oikawa, Y. Inamura, K. Hayashi, W. Saito, Y. Miyazaki (Poster)

The 3rd Asian Conference on Thermoelectrics (ACT3) & The 5th Micro & Nanoscale Heat Transfer and Energy Workshop (MNHTE2018) (7-9 October 2018, Taiwan)

“Off-stoichiometric Effects on the Structure and Thermoelectric Properties of half-Heusler-type FeVSb compounds”
Y. Huang, K. Hayashi, Y. Miyazaki (Oral)

37th International and 16th European Conference on Thermoelectrics (ICT & ECT 2018) (July 1-5 2018, Caen)

“High-performance thermoelectric bulk colusite by process controlled structural disordering”
Cédric Bourgès, Y. Bouyrie, A. R. Supka, R. A. R. A. Orabi, P. Lemoine, O. Lebedev, M. Ohta, K. Suekuni, V. Nassif, V. Hardy, R. Daou, Y. Miyazaki, M. Fornari, E. Guilmeau (Oral)
“Structural analysis of beta- and gamma-phases of Zn₄Sb₃ thermoelectrics”
K. Hayashi, A. Yokoyama, Y. Miyazaki (Oral)
“Design and evaluation of Fe₂V(Al_0.9Si_0.1)/Cu tilted-multilayer thermoelectric devices”
N. Kodaira, Y. Oide, K. Hayashi, Y. Miyazaki (Poster)
“Effects of Cu-substitution on Theremoelectric Properties of Pseudogap Ternary Intermetallic Compound TiNiSi”
Y. Huang, H. Nagai, K. Hayashi, Y. Miyazaki (Poster)
“Effect of Lattice Defects on the Seebeck Coefficient of Mg₂Sn”
W. Saito, K. Hayashi, Y. Miyazaki (Poster)
“Measurements of surface potential of M/Mg₂Si (M = Mg, Al, Ni) interfaces”
I. Ando, K. Hayashi, W. Saito, Y. Hayashibara, Y. Miyazaki (Poster)
“High temperature X-ray diffraction study of melt grown MnSi_γ“
Y. Kawasaki, H. Hamada, K. Hayashi, Y. Miyazaki (Poster)
“Effects of Co substitution on crystal structure and thermoelectric properties of melt-grown higher manganese silicides”
H. Nagai, H. Hamada, K. Hayashi, Y. Miyazaki (Poster)
“Synthesis and Thermoelectric Properties of Mo-substituted CrSi₂ by Reduction-Diffusion Process”
H. Nakasawa, T. Takamatsu, Y. Iijima, K. Hayashi, Y. Miyazaki (Poster)

International conference on modern materials & technologies (CIMTEC 2018) (June 4-14 2018, Perugia)

“High Electron Mobility and Stability of n-type Mg₃(Sb,Bi)₂“
T. Kanno, H. Tamaki, H.K. Sato, Y. Miyazaki (Oral)
“Thermoelectric Properties of Mn₂V(Al_1-xSi_x) FullHeusler Alloys”
H. Li, K. Hayashi, Y. Miyazaki (Oral)

Intermag 2018 (April 23-27 2018, Singapore)

“Preparation and thermoelectric properties of Mn₂V(Al_1-xSi_x) full-Heusler compounds”
H. Li, K. Hayashi, Y. Miyazaki (Poster)

Thesis

Master

“Preparation and Evaluation of Metal-Dispersed Mg₂Si Composites”
“Effect of Thermal History on Crystal Structare and Thermoelectric Properties of Higher Manganese Sillicides”
“Fabrication and Generator performance on Thermoelectric C40-Type Silicides Thin Device Obtained by Melt Spinning Process”
“Preparation and thermoelectric properties of p-Type Half-metallic Full Heusler compounds”

Doctor

“Thermoelectric Properties of Transition Metal Silicides, MnSi_γ and CrSi₂“

2017

Papers

“Thermoelectric properties of olivine-type sulfides Tm₂XS₄ (Tm = Mn, Fe, X = Si, Ge)”
H. Nagai, K. Hayashi, and Y. Miyazaki
Transactions of the Materials Research Society of Japan 43, 13 (2018).
“Enhancement of average thermoelectric figure of merit by increasing the grain-size of Mg_3.2Sb_1.5Bi_0.49Te_0.01“
T. Kanno, H. Tamaki, H. K. Sato, S. D. Kang, S. Ohno, K. Imasato, J. J. Kuo, G. J. Snyder, and Y. Miyazaki
Applied Physics Letters 112, 033903 (2018).
“Polymer electrolyte liquid crystal mixtures as phase-dependent thermoelectric materials”
S. M. Said, S. R. Sahamir, M. F. M. Sabri, M. A. Kamarudin, K. Hayashi, A. Z. S. Zulkifli, T. Nakajo, M. Kubouchi, Y. Miyazaki
Molecular Crystals and Liquid Crystals, 642, 9 (2017).
“Preparation and thermoelectric properties of mixed valence compound Sn₂S₃“
W. Saito, K. Hayashi, H. Nagai, Y. Miyazaki
Japanese Journal of Applied Physics, 56, 061201 (2017).
“Structural and Thermoelectric Properties of Ternary Full-Heusler Alloys”
K. Hayashi, M. Eguchi, Y. Miyazaki
Journal of Electronic Materials, 46, 2710 (2017).
“Crystal Structure and Thermoelectric Properties of Lightly Vanadium-Substituted Higher Manganese Silicides (Mn_1-xV_x)Si_γ“
Y. Miyazaki, H. Hamada, K. Hayashi, K. Yubuta
Journal of Electronic Materials, 46, 2705 (2017).

Invited Talks

World Congress of Smart Materials 2018 (March 6-8, 2018, Osaka)

“Microstructure and thermoelectric properties of magnesium silicide composites”
K. Hayashi (Invited lecture)

Global Congress of Knowledge Economy 2017 (September 19-21, 2017, Qingdao)

“Electronic structure and thermoelectric properties of ternary full-Heusler compounds”
K. Hayashi (Invited lecture)

15th International Conference on Advanced Materials IUMRS-ICAM 2017 (August 27-September 1, 2017, Kyoto)

“Thermoelectric preperties of Fe and V co-substituted higher manganese silicides”
Y. Miyazaki, H. Hamada, H. Nagai, M. Sato, K. Hayashi (Keynote lecture)

7th International Symposium on Energy (Energy7) (August 13-17, 2017, Manchester)

“Enhanced thermoelectric performance in partially substituted melt grown higher manganese silicides”
Y. Miyazaki, H. Hamada, H. Nagai, K. Hayashi, K. Yubuta (Invited lecture)

12th Pacific Rim Conference on Ceramic and Glass Technology (PACRIM 12), including Glass & Optical Materials Division Meeting (GOMD 2017) (May 21-26, 2017, Hawaii)

“Thermoelectric properties of lightly-substituted melt grown higher manganese silicides”
Y. Miyazaki, H. Hamada, H. Nagai, M. Sato, K. Hayashi (Invited lecture)

Conferences

The 27th International Photovoltaic Science and Engineering Conference PVSEC-27 (November 12-17, 2017, Ohtsu)

“Fabrication of (Mn,Fe)Si_γ~1.7 thin films for near-infrared absorption solar cells”
K. Hayashi, K. Ishii, C. Kawasaki, R. Honda, Y. Miyazaki (Poster)

The 15th European Conference on Thermoelectrics ECT2017 (September 25-27, 2017, Padua)

“Thermoelectric Properties of TrNiM (Tr=Ti, Zr; M=Si, Ge) Ternary Intermetallic Compounds”
Y. Huang, H. Nagai, K, Hayashi, Y. Miyazaki (Poster)
“Design and evaluation of Fe₂VAl_0.9Si_0.1/Cu tilted-multilayer thermoelectric devices”
N. Kodaira, Y. Oide, K. Hayashi, Y. Miyazaki (Poster)

The 15th International Conference on Advanced Materials IUMRS-ICAM 2017 (August 27-September 1, 2017, Kyoto)

“Thermoelectric properties of Mo and Ge co-substituted CrSi₂“
H. Nakasawa, T. Takamatsu, Y. Iijima, K. Hayashi, and Y. Miyazaki (Oral)
“Thermoelectric Properties of Olivine-type Sulfides”
H. Nagai, K. Hayashi, and Y. Miyazaki (Oral)
“Analysis of point defects in Mg-Si-Sn ternary thermoelectric compounds”
M. Kubouchi, K. Hayashi, Y. Ogawa, W. Saito, Y. Miyazaki, and R. Funahashi (Poster)

International Conference on Thermoelectrics ICT2017 (July 31-August 3, 2017, Pasadena)

“Comprehensive study on the thermoelectric properties of Co₂MnSi and Co₂FeSi”
K. Hayashi, M. Eguchi, and Y. Miyazaki (Poster)
“Lattice defects in Mg₂Sn studied by band structure calculation and single-crystal X-ray diffraction”
W. Saito, K. Hayashi, M. Kubouchi, and Y. Miyazaki (Poster)

12th Pacific Rim Conference on Ceramic and Glass Technology (PACRIM 12), including Glass & Optical Materials Division Meeting (GOMD 2017) (May 21-26, 2017, Hawaii)

“Crystal structure and thermoelectric properties of partially substituted melt-grown higher manganese silicides”
H. Nagai, H. Hamada, K. Hayashi, Y. Miyazaki (Oral)
“Thermoelectric properties of V, Fe co-substituted MnSi_γ synthesized by melt-grown method”
M. Sato, H. Hamada, K. Hayashi, Y. Miyazaki (Poster)
“Preparation and thermoelectric properties of Sn₂S₃ with electron lone pairs”
W. Saito, H. Nagai, K. Hayashi, Y. Miyazaki (Poster)

Thesis

Master

“Fabrication and Evaluation of Tilted-Multilayer Thermoelectric Devices Consisting of a Fe₂VAl Compound and a metal”
“Analysis of Lattice Defects in Thermoelectric Materials”
“Thermoelectric properties of vanadium and iron co-substituted higher manganese silicides”
“Thermoelectric properties of pseudogap intermetallic compounds TrNiM (Tr = Ti, Zr; M = Si, Ge)”
“Structural and Thermoelectric Properties of Melt-Grown Zn₄Sb₃“

Doctor

“Fabrication of Layered Thermoelectric Materials and Their Applications”

2016

Papers

“Structural and thermoelectric properties of TTF-I_0.71 organic compound”
K. Hayashi, K. Kuba, Y. Miyazaki
Physica Status Solidi (b), 254, 1600513 (2016).
“Effects of Ge substitution on thermoelectric properties of CrSi₂“
H. Nagai, T. Takamatsu, Y. Iijima, K. Hayashi, Y. Miyazaki
Japanese Journal of Applied Physics, 55, 111801 (2016).
“Thermoelectric Hexagonal A-Mg-Si with A = Sr and Ba Zintl Phases”
T. Kajitani , K. Takahashi, M. Saito, H. Suzuki, S. Kikuchi, M. Kubouchi, K. Hayashi
Journal of Electronic Materials, 45, 5238 (2016).
“Effects of Nb substitution on thermoelectric properties of CrSi₂“
H. Nagai, T. Takamatsu, Y. Iijima, K. Hayashi, Y. Miyazaki
Journal of Alloys and Compounds, 687, 37 (2016).
“Thermoelectric and magnetic properties of Yb₂MgSi₂ prepared by spark plasma sintering method”
M. Kubouchi, K. Hayashi, Y. Miyazaki
Applied Physics A 122, 769 (2016).
“Electronic structure and thermoelectric properties of boron doped Mg₂Si”
M. Kubouchi, K. Hayashi, Y. Miyazaki
Scripta Materialia, 123, 59 (2016).
“Thermoelectric Properties of Microstructurally Modified CoSb₃ Skutterudite by Hf-Addition”
M. H. Elsheikh, M. F. M. Sabri, S. M. Said, Y. Miyazaki, H. H. Masjuki, D. A. A. Shnawah, B. D. Long, S. Naito, M. B. A. Bashir
Journal of Electronic Materials, 45, 2886 (2016).

Books

Higher Manganese Silicides
Y. Miyazaki
“Materials Aspect of Thermoelectricity” chapter 13
ed. C. Uher, CRC Press, Boca Raton, FL, 2016.

Invited Talks

AnalytiX-2017 (March 22-24, 2017, Fukuoka)

“(3+1)-dimensional Incommensurately Modulated Crystal Structure: X-ray Diffraction Study”
Kei Hayashi (Invited lecture)

EMN Meeting on Energy and Sustainability (Nobember 28-December 2, 2016, Osaka)

“Promising thermoelectric properties of melt-grown Zn₄Sb₃ Zintl phase”
Kei Hayashi, Aisaku Yokoyama, Kentaro Ishii, Tomohisa Takamatsu, Yuzuru Miyazaki (Invited lecture)

Global Congress & Expo on Materials Science & Nanoscience (October 24-26, 2016, Dubai)

“Enhanced thermoelectric properties of chimney-ladder higher manganese silicides”
Yuzuru Miyazaki (Invited lecture)

The 35th International Conference & the 1st Asian Conference on Thermoelectrics (ICT/ACT 2016) (May 29-June 2, 2016, Wuhan)

“Strategies and approaches to enhance thermoelectric properties of silicide-based materials”
Yuzuru Miyazaki, Haruki Hamada, Hiroki Nagai, Masataka Kubouchi, Kei Hayashi (Invited lecture)

EMN Croatia Meeting 2016 (May 4-7, 2016, Dubrovnik)

“Enhanced thermoelectric properties of chimney-ladder higher manganese silicides”
Yuzuru Miyazaki (Invited lecture)

EMN Beijing Meeting 2016 (April 21-25, 2016, Beijing)

“Effects of interstitial Mg and secondary phases on thermoelectric properties of Mg₂Si”
Kei Hayashi, Masataka Kubouchi, Yohei Ogawa, Yuzuru Miyazaki (Invited lecture)

Conferences

29th International Symposium on Superconductivity (ISS2016) (December 13-15, 2016, Tokyo)

“Impurity Effects on T_c and Electronic Transport Properties in the Undoped Superconductor T’-La_1.8Eu_0.2CuO₄“
K. Ohashi, T. Kawamata, T. Takamatsu, T. Adachi, M. Kato, S. Naito, K. Hayashi, Y. Miyazaki, Y. Koike (Poster)

The 14th European Conference on Thermoelectrics (ECT2016) (September 20-23, 2016, Lisbon)

“Thermoelectric properties of densified misfit-layered sulfides [Ln₂S₂]_pNbS₂ (Ln=Lanthanides)”
K. Ishii, K. Hayashi, Y. Miyazaki (Poster)

CWRU-TU 3rd Joint workshop (August 9-10, 2016, Sendai)

“B-doping effect on the thermoelectric properties of Mg₂Si”
Masataka Kubouchi, Kei Hayashi, Yuzuru Miyazaki (Poster)
“Effects of Ru substitution on crystal structure and thermoelectric properties of higher manganese silicides”
Hiroki Nagai, Haruki Hamada, Kei Hayashi and Yuzuru Miyazaki (Poster)

The 2016 Compound Semiconductor Week (CSW2016) (June 26-30, 2016, Toyama)

“Structural and thermoelectric properties of TTF-I_0.71 organic compound”
Kei Hayashi, Kento Kuba, and Yuzuru Miyazaki (Poster)

The 35th International Conference & the 1st Asian Conference on Thermoelectrics (ICT/ACT 2016) (May 29-June 2, 2016, Wuhan)

“Crystal structure and thermoelectric properties of Ru-substituted higher manganese silicides”
H. Nagai, H. Hamada, K. Hayashi, Y. Miyazaki (Poster)
“Structural and Thermoelectric Properties of Ternary Full-Heusler Alloys”
M. Eguchi, K. Hayashi, and Y. Miyazaki (Poster)

Thesis

Master

“Thermoelectric Properties of Densified Misfit-Layered Sulfides [Ln₂S₂]_pNbS₂ (Ln = Lanthanides)”
“Fabrication and thermoelectric properties of Mg₂Si/M (M = Mg, BiSb) composite materials”
“Effects of co-substitution of Heavy Elements Nb and Ge on Thermoelectric Properties of CrSi₂“
“Thermoelectric properties of partially substituted Nowotny chimney-ladder MnSi_γ“

Docter

“Analysis of lattice defects in Mg-Si-Sn ternary thermoelectric compounds”

2015

Awards

Shuma Naito, 34th Annual International Conference on Thermoelectrics 2015 ITS Poster Award (The IST Outstanding Poster)(July, 2015)
“Fabrication and Power Generation of a Silicide-based Thermoelectric Module”

Papers

“Structural Investigation and Indium Substitution in the Thermoelectric Mn_2.7Cr_0.3Si₄Al_2-xIn_x Series”
T. Barbier, E. Combe, R. Funahashi, T. Takeuchi, M. Kubouchi, Y. Miyazaki, E. Guilmeau and R. O. Suzuki
Journal of Electronic Materials, 45, 1992 (2016).
“Effect of Interstitial Mg in Mg_2+xSi on Electrical Conductivity and Seebeck Coefficient”
M. Kubouchi, Y. Ogawa, K. Hayashi, T. Takamatsu, and Y. Miyazaki
Journal of Electronic Materials, 45, 1589 (2016).
“Crystal structure and thermoelectric properties of the incommensurate chimney-ladder compound VGe_γ (γ ~ 1.82)”
H. Hamada, Y. Kikuchi, K. Hayashi, and Y. Miyazaki
Journal of Electronic Materials, 45, 1365 (2016).
“Crystal structure and thermoelectric properties of the incommensurate chimney-ladder compound RhGe_γ (γ～ 1.293)”
Y. Miyazaki, T. Nakajo, Y. Kikuchi and K. Hayashi
J. Mater. Res., 30, 2611 (2015).
“Ionic liquid entrapment by an electrospun polymer nanofiber matrix as a high conductivity polymer electrolyte”
R. S. Datta, S. M. Said, S. R. Shahrir, Norbani Abdullah, M. F. M. Sabri, S. Balamurugan, Y. Miyazaki, K. Hayashi, N. A. Hashim, Umma Habiba and Amalina M. Afifi
RSC Advances, 5, 48217 (2015).

Invited Talks

EMN Thermoelectric Materials Meeting 2016 (February 21-25, 2016, Orland)

“Effect of interstitial site in Mg₂Si on thermoelectric properties “
M. Kubouchi (Invited lecture)

International Conference on Thermoelectric Materials Science 2015 (TMS2015) (November 9-11, 2015, Nagoya)

“Incommensurate Nowotny chimney-ladder compounds as potential thermoelectric materials”
Y. Miyazaki (Invited lecture)

34th Annual International Conference on Thermoelectrics (ICT2015) (June 28 – July 2nd, 2015, Dresden, Germany)

“Enhanced thermoelectric performance of higher manganese silicides through the control of valence electron counts”
Y. Miyazaki, Y. Kikuchi, H. Hamada, S. Naito, K. Hayashi, K. Yubuta (Invited lecture)

The 1st International Conference on Microstructure and Property of Materials (MPM-2015) (May 26-30, 2015, Hangzhou, China)

“Enhanced thermoelectric performance of lightly Cr-substituted higher manganese silicides”
Y. Miyazaki (Invited lecture)

Energy Materials Nanotechnology Phuket 2015 (EMN Phuket 2015) (May 4-7, 2015, Phuket, Thailand)

“Nowotny Chimney-ladder Higher Manganese Silicides as Potential Thermoelectric Compounds”
Y. Miyazaki (Invited lecture)

Conferences

International Conference on Thermoelectric Materials Science 2015 (TMS2015) (November 9-11, 2015, Nagoya)

“Thermoelectric properties of Cr(Si_1-xGe_x)₂“
H. Nagai (Poster)

APERIODIC 2015 (August 30- September 4, 2015, Břevnov Monastery, Prague)

“Crystal Structure and Thermoelectric Properties of Incommensurate Higher Manganese Silicides”
Y. Miyazaki

34th Annual International Conference on Thermoelectrics (ICT2015) (June 28th- July 2nd, 2015, Dresden, Germany)

“Thermoelectric hexagonal A-Mg-Si with A=Sr and Ba Zintl phases”
T. Kajitani, K. Takahashi, M. Saito, H. Suzuki, S. Kikuchi, M. Kubouchi, K. Hayashi (Oral)
“Effect of interstitial Mg in Mg_2+xSi on electrical conductivity and Seebeck coefficient”
M. Kubouchi, Y. Ogawa, K. Hayashi, T. Takamatsu, Y. Miyazaki (Oral)
“Synthesis of Mo-substituted CrSi₂ by the soft-chemical technique”
H. Nakasawa, T. Takamatsu, Y. Iijima, K. Hayashi, Y. Miyazaki (Oral)
“Thermoelectric properties of Cr_1-xNb_xSi₂“
H. Nagai, T. Takamatsu, Y. Iijima, K. Hayashi, Y. Miyazaki (Poster)
“Fabrication of TTF-I_x thin films for thermoelectric applications”
K. Kuba, K. Hayashi, Y. Miyazaki (Poster)
“Fabrication and Power Generation of a Silicide-based Thermoelectric Module”
S. Naito, R. Funahashi, Y. Matsumura, S. Katsuyama, Y. Kikuchi, K. Hayashi, Y. Miyazaki (Poster)
“Crystal structure and thermoelectric properties of Nowotny chimney-ladder VGe_γ“
H. Hamada, Y. Kikuchi, K. Hayashi, Y. Miyazaki (Poster)
“Theoretical investigation of the excellent p-n control in yttrium aluminoborides”
R. Sahara, T. Mori, S. Maruyama, Y. Miyazaki, K. Hayashi, T. Kajitani (Poster)

Thesis

Master

“Structural and Thermoelectric Properties of Organic Material, TTF-I_x“
“Fabrication and Power Generation of a Silicide-Base Thermoelectric Module”
“Effects of Heavy Elements Nb and Ge Substitution on Thermoelectric Properties of CrSi₂“

Awards

Papers

Invited talks

Conferences

40th International Conference on Thermoelectrics (June 30- July 4, Krakow)

Awards

Papers

Invited talks

The 15th Pacific Rim Conference of Ceramic Societies (PACRIM15) & The 13th Int’l Conference on High-Performance Ceramics (CICC-13) (5-9 Nobember 2023, Shenzhen)

International Workshop Thermoelectric Materials: from materials chemistry and physics to devices (IWT2023)(April 12-14, 2023, Caen)

8th Annual Conference of Analytix-2023 (17-19 May 2023, Osaka)

Conferences

The 15th Pacific Rim Conference of Ceramic Societies (PACRIM15) & The 13th Int’l Conference on High-Performance Ceramics (CICC-13) (5-9 Nobember 2023, Shenzhen)

The 19th European Conference on Thermoelectrics (ECT2023) (17-21 September 2023, Prague)

The 39th Annual International Conference on Thermoelectrics (ICT2023) (21-25 June 2023, Seatle)

Thesis

Master

Awards

Papers

Invited talks

SIPS2022 Mizutani International Symposium (27-30 November 2022, Phuket)

Conferences

33rd International Photovoltaic Science and Engineering Conference (PVSEC-33) (13-17 November 2022, Nagoya)

18th European Conference on Thermoelectrics (ECT’22) (14-16 Septemper 2022, Barcelona)

The 6th Asia-Pacific Conference on Semiconducting Silicides and Related Materials, 2022 (APAC-Silicide 2022) (30 July – 1 August 2022, Online)

Virtual Conference on Thermoelectrics 2022 (VCT 202) (20-22 July 2022, Online)

Thesis

Doctor

Papers

Invited talks

Materials Research Meeting 2021 (MRM2021) (13-16 December 2021, Yokohama)

1st Japan France Virtual Workshop on thermoelectrics (VWT2021) (27-30 September 2021, online)

Conferences

Materials Research Meeting 2021 (MRM2021) (13-16 December 2021, Yokohama)

Thesis

Doctor

Awards

Papers

Books

Invited talks

The 5th Asian Conference on Thermoelectrics (ACT5) &The 6th Southeast Asia Conference on Thermoelectrics (SACT6) (17, 18 December 2020, online)

Conferences

The 5th Asian Conference on Thermoelectrics (ACT5) &The 6th Southeast Asia Conference on Thermoelectrics (SACT6) (17 December 2020, online)

The 2nd International Conference on Metals and Alloys (CMA 2020)(6-9 December 2020, online)

The 2020 Magnetism and Magnetic Materials Virtual Conference(MMM2020)(2-6 November 2020, online)

Virtual Conference on Thermoelectrics (21-23 July 2020, online)

Thesis

Master

Doctor

Awards

Papers

Invited talks

17th European Conference on Thermoelectrics (ECT2019)(23-25 September 2019, Cyprus)

5th Asia-Pacific conference on semiconducting silicides and related materials (APAC-SILICIDE 2019) (20-23 July 2019, Miyazaki)

European Materials Research Society (E-MRS) 2019 Spring Meeting (27-31 May 2019, Nice)

Conferences

Materials Research Meeting 2019 (10-14 December 2019, Yokohama)

14th International Conference on the Structure of Non-Crystalline Materials (NCM14) (3-8 November 2019, Kobe)

5th Asia-Pacific conference on semiconducting silicides and related materials (APAC-SILICIDE 2019) (20-23 July 2019, Miyazaki)

38th International and 4th Asian Conference on Thermoelectrics (ICT & ACT 2019) (30 June – 5 July 2019, Gyeongju)

Thesis

Master

Doctor

Awards

Papers

Invited talks

XVI Interstate Conference on Thermoelectrics and Their Applications (ISCTA 2018) (October 8-10 2018, St. Petersburg, Russia)

International Conference on Ceramic Materials and Components for Energy and Environmental Applications (CMCEE 2018) (July 22-27 2018, Singapore)

37th International and 16th European Conference on Thermoelectrics (ICT & ECT 2018) (July 1-5 2018, Caen)

EMN Greece Meeting 2018 (May 14-18 2018, Heraklion, Greece)

Conferences

ISSP – J-PARC Joint Workshop on Science Frontier by Neutron Scattering ～ The 17th Korea-Japan meeting on Neutron Science ～ (January, 2019, Ohta)

The 3rd Asian Conference on Thermoelectrics (ACT3) & The 5th Micro & Nanoscale Heat Transfer and Energy Workshop (MNHTE2018) (7-9 October 2018, Taiwan)

37th International and 16th European Conference on Thermoelectrics (ICT & ECT 2018) (July 1-5 2018, Caen)

International conference on modern materials & technologies (CIMTEC 2018) (June 4-14 2018, Perugia)

Intermag 2018 (April 23-27 2018, Singapore)

Thesis

Master

Doctor

Papers

The 2nd International Conference on Metals and Alloys (CMA 2020)
(6-9 December 2020, online)

The 2020 Magnetism and Magnetic Materials Virtual Conference(MMM2020)
(2-6 November 2020, online)