Electronic and Thermoelectric Properties of the Intermetallic Compounds MNiSn (M = Ti, Zr, and Hf)(Condensed matter : electronic structure and electrical, magnetic, and optical properties)

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概要

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• We have performed first-principles calculations for the half-Heusler type ternary compounds MNiSn (M = Ti, Zr, and Hf). To discuss the relationship between the electronic and thermoelectric properties, we evaluate Seebeck coefficients from the calculated band structure within the Boltzmann transport theory. The temperature and carrier concentration dependences of the Seebeck coefficients are discussed in terms of the density of states and Fermi velocity near the band edges. The calculated Seebeck coefficients for all these materials are found to be about -300μV/K at a low n-type carrier concentration at room temperature, being in good agreement with experiments.

• 社団法人日本物理学会の論文
• 2008-05-15

著者

• ISHII Fumiyuki

  Graduate School of Advanced Sciences of Matter, Hiroshima University

• Ishii Fumiyuki

  Graduate School Of Natural Science And Technology Kanazawa University

• Oguchi Tamio

  Department Of Quantum Matter Adsm Hiroshima University

• Oguchi Tamio

  Department Of Quantum Matter Graduate School Of Advanced Sciences Of Matter (adsm) Hiroshima Univers

• Oguchi Tamio

  Department Of Engineering Physics The University Of Electro-communications

• ONOUE Masatoshi

  Department of Quantum Matter, ADSM, Hiroshima University

• Onoue Masatoshi

  Department Of Quantum Matter Adsm Hiroshima University

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