・名古屋工業大学学術機関リポジトリは、名古屋工業大学内で生産された学術情報を電子的に収集・保存・発信するシステムです。 ・論文の著作権は、著者または出版社が保持しています。著作権法で定める権利制限規定を超える利用については、著作権者に許諾を得てください。 ・著者版フラグに「author」と記載された論文は、著者原稿となります。実際の出版社版とは、レイアウト、字句校正レベルの異同がある場合もあります。 ・Nagoya Institute of Technology Repository Sytem is built to collect, archive and offer electronically the academic information produced by Nagoya Institute of Technology. ・The copyright and related rights of the article are held by authors or publishers. The copyright owners' consents must be required to use it over the curtailment of copyrights. ・Textversion "Author " means the article is author's version. Author version may have some difference in layouts and wordings form publisher version.
High-resolution soft x-ray photoelectron study of density of states and thermoelectric properties of the Heusler-type alloys (Fe2 3V1 3)100-yAly
利用統計を見る
The high-resolution soft x-ray photoelectron study of Heusler(L21)-type (Fe2 3V1 3)100-yAly (y=23.8-25.8) alloys directly confirms the correlation between their thermoelectric properties and the electronic structures near the Fermi level. It shows the rigid-band-like shift of the main 3d bands and the increase of the photoelectron intensity at the Fermi edge with the small deviation of the Al content from stoichiometry, i.e., y=25.0. This implies the existence of the pseudogap across the Fermi level in Fe2VAl. The Seebeck coefficients evaluated from the present spectroscopic data agree well with the experimental ones as well as the values estimated from a theoretical density of states in a rigid-band model, while the shift is much smaller than what is expected in the rigid-band model. The small modification of the electronic structure in the off-stoichiometric (Fe2 3V1 3)100-yAly alloys may be attributed to the lower contribution of Al to the electronic states near EF.
High-resolution soft x-ray photoelectron study of density of states and thermoelectric properties of the Heusler-type alloys (Fe2 3V1 3)100-yAly
本文_fulltext
(105.84KB)
