Enhancement of Magnetism of Fe by Cr and V
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概要
- 論文の詳細を見る
Enhancement of magnetism of Fe that occurs by alloying with Cr or V is discussed on the basis of first-principles electronic structure calculation. The d states of Fe next to Cr(V) are pushed down to the lower energy side compared to those of pure Fe due to the hybridization with Cr(V) d states, which leads a Co-like electronic structure for the Fe atom. This enhances magnetic moments of other Fe atoms and also the exchange couplings among them. The same mechanism works as well for the magnetism of Fe/Cr heterostructures. The idea is extended to design of a new type of antiferromagnets with high Néel temperature. Such heterostructures could be used to increase a magnetic anisotropy of permanent magnets.
- 2011-10-15
著者
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Akai Hisazumi
Department Of Physics Graduate School Of Science Osaka University
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Akai Hisazumi
Department of Physics, Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan
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Ogura Masako
Department of Physics, Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan
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Kanamori Junjiro
Professor Emeritus, Osaka University, Suita, Osaka 565-0871, Japan
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