Electronic and Local Crystal Structures of the ZrNiSn Half-Heusler Thermoelectric Material
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- Miyazaki Hidetoshi
- Center for Fostering Young and Innovative Researchers, Nagoya Institute of Technology
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- Nakano Teruaki
- Department of Frontier Materials, Nagoya Institute of Technology
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- Inukai Manabu
- Department of Frontier Materials, Nagoya Institute of Technology
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- Soda Kazuo
- Department of Quantum Engineering, Graduate School of Engineering, Nagoya University
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- Izumi Yudai
- Japan Synchrotron Radiation Research Institute (JASRI)
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- Muro Takayuki
- Japan Synchrotron Radiation Research Institute (JASRI)
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- Kim Jungeun
- Japan Synchrotron Radiation Research Institute (JASRI)
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- Takata Masaki
- RIKEN SPring-8 Center
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- Matsunami Masaharu
- UVSOR Facility, Institute for Molecular Science (IMS) School of Physical Sciences, The Graduate University for Advanced Studies (SOKENDAI)
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- Kimura Shin-ichi
- UVSOR Facility, Institute for Molecular Science (IMS) School of Physical Sciences, The Graduate University for Advanced Studies (SOKENDAI)
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- Nishino Yoichi
- Department of Frontier Materials, Nagoya Institute of Technology
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Abstract
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.
Journal
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- MATERIALS TRANSACTIONS
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MATERIALS TRANSACTIONS 55 (8), 1209-1214, 2014
The Japan Institute of Metals and Materials
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Details 詳細情報について
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- CRID
- 1390001204253716480
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- NII Article ID
- 40020140529
- 130004455348
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- NII Book ID
- AA1151294X
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- ISSN
- 13475320
- 13459678
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- NDL BIB ID
- 025617062
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
- KAKEN
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- Abstract License Flag
- Disallowed