2021

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Papers

• Realizing p-type Mg₂Sn Thermoelectrics via Ga-Doping and Point Defect Engineering
  Zhicheng Huang, Kei Hayashi, Wataru Saito, and Yuzuru Miyazaki
  ACS Applied Energy Materials, 4, 13044 (2021).
• Outstanding thermoelectric performance of n-type half-Heusler V(Fe_1-xCo_x)Sb compounds at room-temperature
  Yi Huang, Kei Hayashi, Yuzuru Miyazaki
  Acta Materialia, 215, 117022 (2021).
• Incommensurately modulated crystal structure of α’ (O’3)-type sodium cobalt oxide Na_xCoO₂ (x ～ 0.78)
  Y. Miyazaki, N. Igawa and K. Yubuta
  Acta Crystallographica B, 77, 371 (2021).
• Chemical-Pressure-Induced Point Defects Enable Low Thermal Conductivity for Mg₂Sn and Mg₂Si Single Crystals
  W. Saito, K. Hayashi, Z. Huang, K. Sugimoto, K. Ohoyama, N. Happo, M. Harada, K. Oikawa, Y. Inamura, K. Hayashi, T. Miyazaki, and Y. Miyazaki
  ACS Applied Energy Materials, 4, 5123 (2021).
• Crystal structure, microstructure and electronic transport properties of β-Zn₄Sb₃ thermoelectrics: effects of Zn intercalation and deintercalation
  S.Yoshioka, K.Hayashi, A.Yokoyama, W.Saito, Y.Miyazaki
  Materials Today Energy, 21, 100723 (2021).

Invited talks

Materials Research Meeting 2021 (MRM2021) (13-16 December 2021, Yokohama)

• “Crystal Structure and Thermoelectric Properties of Incommensurate Composite Crystal MnSi_γ (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”