2023

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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”