2023年度

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受賞

• マンガンケイ化物に関する論文が、ACS Applied Energy MaterialsのCoverに選出されました。(2023年12月)
• 菅野 楽人　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”
• マンガンケイ化物の熱電特性と機械的特性に関する論文が、ACS Applied Energy MaterialsのCoverに選出されました。(2023年3月)

学術論文

• “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, 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, 13(7), 1222 (2023).

講演

第55回排熱発電コンソーシアム(1月19日, 2024年, 東京)

• “格子欠陥を導入したMg2Sn単結晶の熱電性能”
  林　慶

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

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

第54回排熱発電コンソーシアム(11月6-7日, 2023年, 仙台市)

• “精密結晶構造解析に基づく熱電材料の開発”
  宮﨑　讓

科研費新学術領域「ハイパーマテリアル」第31回ハイパーマテリアル・セミナー(9月13日, 2023年, オンライン)

• “非整合複合結晶の特徴と熱電材料への応用”
  宮﨑　讓

第28回日本熱電学会研究会「シリコンおよびケイ化物系熱電変換材料研究の最前線と新展開」 (7月28日, 2023年, 東京)

• “高マンガンケイ化物の結晶構造と熱電特性”
  宮﨑　讓

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”
  Yuzuru Miyazaki (Invited lecture)

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)

学会発表

MRM2023-IUMRS-ICA2023 (11-16 December 2023, Kyoto)

• “Thermoelectric properties of Sr-substituted [Ca₂(Co_0.65Cu_0.35)₂O₄]_pCoO₂
  Y. Shimizu, K. Hayashi, Y. Miyazaki (Poster)

2023年応用物理学会東北支部 第78回学術講演会(12月6-7日, 2023年, 盛岡市)

• “近赤外光吸収材料 (Mn,Fe,V)Si_γ 単結晶の作製”
  千葉 俊明, 林 慶, 宮﨑 讓 (口頭発表)

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)

学位論文

修士

• “空孔欠陥を含むMg₂Ge単結晶熱電材料の作製と高性能化”

2022年度

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受賞

• 黄志成 令和4年度(第26回)応用物理研究奨励賞(2023年3月)
• p型Mg₂Sn熱電材料の熱電性能に関する論文が、Journal of Materials Chemistry AのBack Coverに選出されました。(2023年2月)

学術論文

• “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 Appllied 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).

著書

• “正スピネル型マグネシウム遷移金属酸化物の合成と電気化学特性”
  丸山恵史（東京都市大学）, 宮﨑 讓
  “二次電池の材料に関する最新技術開発” 技術情報協会, 第11章 第12節 (2022).

解説

• “熱電発電の実用化に向けた格子欠陥含有単結晶の開発”
  林 慶
  アグリバイオ 7, 39-41 (2023).
• “Mg₂Sn単結晶の点欠陥・線欠陥に対する化学的圧力の効果”
  林 慶
  日本熱電学会誌 18, 145-146 (2022).
• “格子欠陥エンジニアリングによるMg₂Sn単結晶の熱電性能の向上”
  林 慶
  応用物理 91, 271-275 (2022).

講演

科研費新学術研究（ハイパーマテリアル）第９回領域会議 (12月22日, 2022年, 神戸市)

• “チムニーラダー型マンガンケイ化物の非整合結晶構造と熱電特性”
  宮﨑 讓

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

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

応用物理学会 JSAP Review創刊記念VRシンポジウム (11月11日, 2022年, オンライン)

• “格子欠陥エンジニアリングによるMg₂Sn単結晶の熱電性能の向上”
  林 慶 (招待講演)

応用物理学会 第39回シリサイド系半導体研究会 (9月24日, 2022年, オンライン)

• “格子欠陥エンジニアリングによるMg₂Si関連物質の熱電性能の向上”
  林 慶 (招待講演)

学会発表

第70回応用物理学会春季学術講演会 (3月15-18日, 2023年, 東京都・オンライン(ハイブリット開催)

• “Mn部分置換CrSi₂の赤外線吸収効率化のためのアニール条件の検討”
  田崎 海地, 林 慶, 髙松 智寿, 李 敬鋒, 宮﨑 讓 (ポスター発表)
• “[Ca₂(Co_0.65Cu_0.35)₂O₄]_0.63CoO₂の配向バルク体の作製と熱電特性”
  清水 嘉, 林 慶, 宮﨑 讓 (口頭発表)

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)

日本金属学会2022年秋期(第171回)講演大会 (9月20-23日, 2022年, 福岡市)

• “規則度を制御したMn₂VAlの熱電性能におけるSi部分置換効果”
  林 慶, 李 和章, 李 敬鋒, 宮﨑 讓 (口頭発表)

第83回応用物理学会秋季学術講演会 (9月20-23日, 2022年, 仙台市・オンライン(ハイブリット開催)

• “パルスレーザー堆積法を用いて作製したCrSi₂薄膜の光学特性”
  田崎 海地, 林 慶, 髙松 智寿, 李 敬鋒, 宮﨑 讓 (ポスター発表)

18th European Conference on Thermoelectrics (ECT’22) (14-16 September 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)

第19回日本熱電学会学術講演会 (TSJ2022) (8月8-10日, 2022年, 長岡市)

• “Fe, V共置換によるn型MnSi_γ単結晶の作製と熱電性能”
  林慶, 千葉俊明, N. S. Chauhan, 李敬鋒, 宮﨑讓 (口頭発表)
• “Unravelling the polymorphic transformation in VFeSb halfHeuslers”
  N. S. Chauhan, H. Yi, and Y. Miyazaki (Oral)

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)

学位論文

修士

• “フルホイスラー型Fe₂TiSiの電子構造と熱電性能”
• “層状カルシウムコバルト酸化物の合成と電気化学特性”
• “Mnで部分置換したCrSi₂の作製と光学特性”
• “太陽電池と熱電発電への応用に向けたMnSi_γ単結晶の作製”

博士

• “Development of P-type Mg₂Sn Single Crystals with Multi-Scale LatticeDefects for Thermoelectric Application”
  (マルチスケールの格子欠陥を導入したp型のMg₂Sn単結晶熱電材料の開発)