Electronic and local crystal structures of the ZrNiSn Half-Heusler thermoelectric material

Hidetoshi Miyazaki, Teruaki Nakano, Manabu Inukai, Kazuo Soda, Yudai Izumi, Takayuki Muro, Jungeun Kim, Masaki Takata, Masaharu Matsunami, Shin Ichi Kimura, Yoichi Nishino

研究成果: Article査読

21 被引用数 (Scopus)

抄録

We investigated the electronic and local crystal structures of the sintered half-Heusler ZrNiSn alloy by synchrotron radiation photoemission spectroscopy (SR-PES), synchrotron radiation X-ray powder diffraction (SR-XRD) measurements, and electronic band structure calculations to clarify mechanisms leading to improvements in the thermoelectric properties of materials. In contrast to the predicted semiconductor-like electronic structure, the SR-PES results show a pseudo-gap at the Fermi level, and the SR-XRD analysis reveals an interstitial Ni disorder in the half-Heusler structure. An improvement in the thermoelectric properties can be achieved by material design based on the pseudo-gap electronic structure of half-Heusler ZrNiSn-based alloys.

本文言語English
ページ(範囲)1209-1214
ページ数6
ジャーナルMaterials Transactions
55
8
DOI
出版ステータスPublished - 2014
外部発表はい

ASJC Scopus subject areas

  • 材料科学(全般)
  • 凝縮系物理学
  • 材料力学
  • 機械工学

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