2020年度

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受賞

• 齋藤亘 令和2年度工学研究科長賞 (2021年3月)
• 齋藤亘 令和2年度(第24回)応用物理研究奨励賞 (2021年3月)
• 劉智超　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”
• 宮﨑教授　東北大学工学部・工学研究科 プレゼンス向上のためのアイデアコンテスト 準グランプリ受賞(2020年10月)
• Zn₄Sb₃熱電材料の結晶構造と電子状態に関する論文が、Journal of Materials Chemistry CのOutside Front Coverに選出されました。(2020年7月)

学術論文

• 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).

著書

• “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.

講演

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

学会発表

第68回応用物理学会春季学術講演会 (3月16-19日, 2021年, オンライン)

• “ホウ素で部分置換したMg₂Sn単結晶の結晶構造と熱電特性”
  林慶, 齋藤亘, 黄志成, 杉本和哉, 山本隆文, 大山研司, 八方直久, 原田正英, 及川健一, 稲村康弘,
  林好一, 宮﨑讓 (口頭発表)
• “SbとBの共置換によるMg₂Sn単結晶の熱電性能の向上”
  齋籐亘, 林慶, 黄志成, 宮﨑讓 (口頭発表)
• “The Crystal Structures and Thermoelectric Properties of Ag-doped Mg₂Sn”
  Z. Huang, K. Hayashi, W. Saito, Y. Miyazaki (Oral)

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)

第17回日本熱電学会学術講演会(TSJ2020) (9月28-30日, 2020年, オンライン)

• “重元素置換MnSi_γを用いたシリサイド熱電変換モジュールの設計と発電特性評価”
  深谷直人，黒崎洋輔，岡本政邦，籔内真，髙松智寿，宮﨑譲，早川純 (口頭発表)
• “ペロブスカイト型酸水素化物SrTiO_3-xH_x の熱電特性における水素の効果”
  高松智寿，福留大輝，林慶，宮﨑讓 (口頭発表)

2020年日本物理学会秋季大会 (9月8-11日, 2020年, オンライン)

• “白色中性子ホログラフィーを用いた熱電材料Mg₂X (X=Si,Sn)の局所構造解析”
  杉本和哉, 山本隆文, 林好一, 八方直久, 原田正英, 及川健一, 稲村康弘, 林慶, 齋藤亘, 宮﨑讓, 大山研司 (口頭発表)

第81回応用物理学会秋季学術講演会 (9月8-11日, 2020年, オンライン)

• “Mg空孔欠陥の導入とSb置換によるMg₂Sn単結晶の熱電性能向上”
  齋籐亘, 林慶, 黄志成, 宮﨑讓 (口頭発表)

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)

学位論文

修士

• “T’-(Gd_1-xRE_x)₂CuO₄（RE=希土類元素）の合成とホールドーピングによる超伝導化の試み”
• “Zn₄Sb₃熱電材料の結晶構造と微細組織に関する研究”
• “Preparation, CrystalStructure andThermoelectricProperties of QuaternaryTi(Fe,Ni)Sb-based Half-Heusler Compounds”
  (4元系ハーフホイスラー化合物 Ti(Fe,Ni)Sbの合成、結晶構造および熱電特性に関する研究)
• “C40型シリサイド系熱電発電モジュールの作製および評価”

博士

• “点欠陥工学を用いた Mg₂Sn単結晶熱電材料の高性能化に関する研究”