ホイスラー型熱電材料Fe2-x-yIryV1+xAlの軟X線光電子分光
スポンサーリンク
概要
- 論文の詳細を見る
The valence-band and core-level electronic structures of Heusler-type alloys Fe2-x-yIryV1+xAl have been investigated by soft X-ray photoelectron spectroscopy, which shows that the valence-band structure near the Fermi level EF is drastically altered by the off-stoichiometric concentration change x, while the position of EF is moderately tuned by the Ir substitution y in a rigid-band-like manner. These changes in the electronic structure lead to the remarkable enhancement of their thermoelectric power. For x > 0, the V 2p core level spectra also show the appearance of new chemically shifted components in the low binding energy side of the main line, which may be attributed mainly to the excess V occupying the Fe site (the anti-site V) as well as V in the surface layer. The present results suggest that the drastic and moderate changes in the electronic structure may be caused by the emergence of such anti-site defects in the off-stoichiometric Fe and V concentrations and by the common band formation between the Fe 3d bands and the substituted Ir 5d states, respectively.
論文 | ランダム
- 逆流十二指腸液の胃発癌作用に関する実験的研究
- 濡れ性の悪い水平平板上面に付着する気泡の大きさと形状
- 濡れ性の悪い固体上面に付着する気泡の大きさと形状
- 細胞免疫ブロット法による髄膜腫からのマトリックスメタロプロテイナーゼ-9及びティッシュインヒビターメタロプロテイナーゼ-1分泌の解析(学位論文抄録)
- 糖尿病と妊娠 (内分泌疾患と妊娠)