2025年度

学術論文

• “Unusual Phonon Scattering and Nanostructuring Implications on Thermoelectric Properties of the Incommensurate MnSi_γ Nowotny Chimney Ladder Phase“
  Nagendra Singh Chauhan, Shivalingam Goud Sara, Toshiaki Chiba, Amrita Bhattacharya, Kei Hayashi, Takao Mori, and Yuzuru Miyazaki
  ACS Applied Energy Materials (2025) (available online).
• “High thermoelectric properties of Mg₂Sn single crystals with engineered lattice defects“
  Kei Hayashi
  Japanese Journal of Applied Physics, 64, 110802 (2025).
• “Research Progress on Mn-based and Co-based Full-Heusler Alloys“
  Hezhang Li, Md All Amin Newton, Chen Chen, Zhicheng Huang, Kei Hayashi, Yuzuru Miyazaki, Jing-Feng Li, Chao Wang
  Solid State Sciences, 168, 108019 (2025).
• “Data-driven approach for potential iron-based half-Heusler thermoelectrics with chemical bonding characteristics“
  Xue Nan, Kei Hayashi, Zhicheng Huang, Yuzuru Miyazaki
  Science Advances, 11, eadw4514 (2025).
• “Dislocation Introduction via Domain Engineering in Mg₂Sn Single Crystal to Improve its Thermoelectric Properties“
  Zhicheng Huang, Kei Hayashi, Wataru Saito, Hezhang Li, Jun Pei, Jinfeng Dong, Toshiaki Chiba, Xue Nan, Bo-Ping Zhang, Jing-Feng Li, Yuzuru Miyazaki
  Small Methods, 2500385 (2025).

講演

The 14th International Conference on High-Performance Ceramics (CICC-14)
(November 30- December 3, Haikou)

• “Incommensurately Modulated Composite Crystals: Potential Thermoelectric
  materials”
  Yuzuru Miyazaki (Keynote lecture)

The 7th Asia-Pacific Conference on Semiconducting Silicides and Related Materials, 2025 (APAC-Silicide 2025) (July 19-21, Sendai)

• “High thermoelectric properties of Mg₂Sn and Mg₂Ge single crystals with engineered lattice defects”
  Kei Hayashi (Invited lecture)

Taiwan Consortium of Emergent Crystalline Materials (TCECM) (May 9-10, Yilan)

• “Preparation of Mg₂Sn and Mg₂Ge Single Crystals for Thermoelectric Application”
  Kei Hayashi (Invited poster)

2025 Taiwan-Japan Workshop on Crystal Growth, Analysis and Calculation (TJ-CGAC) (May 7-9, Yilan)

• “Development of single crystalline Mg₂Sn and Mg₂Ge thermoelectrics with engineered lattice defects”
  Kei Hayashi (Invited lecture)

16th Pacific Rim Conference on Ceramic and Glass Technology including Glass & Optical Materials Division Meeting (GOMD 2025) (May 4-9, Vancouver)

• “Data-driven approach to find potential Fe-based half-Heusler thermoelectric materials for the near-room-temperature applications”
  Yuzuru Miyazaki (Invited lecture)

学会発表

日本セラミックス協会 第38回秋季シンポジウム (September 17-19, Maebashi)

• “ミスフィット型コバルト酸化物の格子熱伝導率に対する部分置換効果”
  清水嘉, 林慶, 宮﨑讓 (Oral)

The 21st European Conference on Thermoelectrics (ECT25) (September 8-12, Nancy)

• “Preparation and Thermoelectric Properties of Doubly-substituted Fe-based Half-Heusler Alloys (V_1-xTi_x)(Fe_1-yCo_y)Sb”
  H. Konishi, X. Nan, Z. Huang, K. Hayashi, Y. Miyazaki (Poster)
• “Characterization of thermoelectric single leg using high-performance Mg₂Sn-based single crystal”
  S. Sato, K. Hayashi, Z. Huang, Y. Miyazaki (Poster)
• “Design of Oxide Thermoelecric Uni-leg Modules”
  Y. Shimizu, K. Hayashi, Y. Miyazaki (Oral)

The 41st International Conference on Thermoelectrics & 7th Asian Conference on Thermoelectrics (ICT/ACT2025) (June 15-19, Sendai)

• “Process and composition optimization strategies on promising Cu₂-II-IV-S₄ based TE materials”
  C. Bourges, R. Al Rahal Al Orabi, Y. Miyazaki, G. Lambard, N. Sato, M. Tachibana, S. Ishii, T. Mori (oral)
• “Graphene-Assisted Electronic DOS Modulation and Phonon Scattering to Improve the Thermoelectric Performance of Mg₃Sb₂-Based Materials”
  Qiang Zhang, Jiadang Li, Nagendra S. Chauhan, Zhicheng Huang, Wenhao Fan, Kei Hayashi, Shaoping Chen, Yuzuru Miyazaki (oral)
• “Thermoelectric enhancement in half-metallic full-Heusler Mn₂VAl alloy through control of nonstoichiometry”
  Kei Hayashi, Gakuto Kanno, Hezhang Li, Zhicheng Huang, Jing-Feng Li, Yuzuru Miyazaki (oral)
• “Enhancement of Thermoelectric Properties in P-Type V_0.6Ti_0.4FeSb Alloys via Point Defects Engineering”
  Zhicheng Huang, Xue Nan, Hiroaki Konishi, Kei Hayashi, Yuzuru Miyazaki (oral)
• “Data-driven approach for potential iron-based half-Heusler thermoelectrics with chemical bonding characteristics”
  Xue Nan, Kei Hayashi, Zhicheng Huang, Yuzuru Miyazaki (poster)
• “Chemical bond engineering towards optimal-performance V_1-xTi_xCo_1-yFeySb half-Heusler thermoelectrics”
  Xue Nan, Kei Hayashi, Hiroaki Konishi, Zhicheng Huang, Yuzuru Miyazaki (poster)
• “Preparation and Thermoelectric Properties of Doubly-substituted Fe-based Half-Heusler Alloys (V_1-xTi_x)(Fe_1-yCoy)Sb”
  Hiroaki Konishi, Xue Nan, Zhicheng Huang, Kei Hayashi and Yuzuru Miyazaki (poster)
• “Preparation and thermoelectric properties of Mg₂Sn single crystals grown under high Ar pressure”
  Kazuki Murayama, Kei Hayashi, Zhicheng Huang, Yuzuru Miyazaki (poster)
• “Preparation and Thermoelectric Properties of Partially-substituted Chimney-ladder Compounds (Fe_1-xCo_x)Ge_γ (γ~1.52)”
  Tatsuhiro Kurosawa, Zhicheng Huang, Kei Hayashi, Yuzuru Miyazaki (poster)
• “Characterization of thermoelectric single leg using high-performance Mg₂Sn-based single crystal”
  Shin Sato, Kei Hayashi, Zhicheng Huang, Yuzuru Miyazaki (poster)
• “Formation of magnesium monovacancies by Sb doping into Mg₂Sn crystals”
  Mamoru Kitaura, Takuma Sumi, Yoshitaka Taira, Shinta Watanabe, Zhicheng Huang, Kei Hayashi, Yuzuru Miyazaki, Koji Michishio, Manabu Ishizaki, Akimasa Ohnishi (poster)
• “Design of Oxide Thermoelectric Uni-leg Modules”
  Yoshimi Shimizu, Kei Hayashi, and Yuzuru Miyazaki (poster)