Category Archives: Activities

2024

2024


Papers

Invited talks

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

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

2023

2023


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)
  • “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)Siγ
    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 FeGeγ
    T. Kurosawa, K. Hayashi, Y. Miyazaki (Poster)
  • “Preparation and thermoelectric properties of nonstoichiometric full‐Heusler Mn2+xV1-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)

2022

2022


Awards

Papers

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)Siγ 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)

2021

2021


Papers

Invited talks

Materials Research Meeting 2021 (MRM2021) (13-16 December 2021, Yokohama)
  • “Crystal Structure and Thermoelectric Properties of Incommensurate Composite Crystal MnSiγ (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

2020


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)
  • “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 Mg2Sn1-xGax
    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(Fe0.5+xNi0.5-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

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

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)Siγ Thin Films Grown by PulsedLaser Deposition Method”
Doctor
  • “”

2018

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

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(Al0.9Si0.1)/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 MnSiγ
    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(Al1-xSix) FullHeusler Alloys”
    H. Li, K. Hayashi, Y. Miyazaki (Oral)
Intermag 2018 (April 23-27 2018, Singapore)
  • “Preparation and thermoelectric properties of Mn2V(Al1-xSix) 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, MnSiγ and CrSi2

2017

2017


Papers

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)Siγ~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 Fe2VAl0.9Si0.1/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 MnSiγ 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

2016


Papers

Books

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 Tc and Electronic Transport Properties in the Undoped Superconductor T’-La1.8Eu0.2CuO4
    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-I0.71 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 MnSiγ
Docter
  • “Analysis of lattice defects in Mg-Si-Sn ternary thermoelectric compounds”

2015

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

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(Si1-xGex)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 Mg2+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 Cr1-xNbxSi2
    H. Nagai, T. Takamatsu, Y. Iijima, K. Hayashi, Y. Miyazaki (Poster)
  • “Fabrication of TTF-Ix 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 VGeγ
    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-Ix
  • “Fabrication and Power Generation of a Silicide-Base Thermoelectric Module”
  • “Effects of Heavy Elements Nb and Ge Substitution on Thermoelectric Properties of CrSi2