Band Theory of Super-Lattice Fe_3Al

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概要

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• The energy bands of an ordered alloy Fe_3Al both in paramagnetic and ferromagnetic state are calculated by the symmetrized augmented plane wave (SAPW) method. There are two types of iron atoms (Fe(I) and Fe(II)) in ferromagnetic state with a different value of the magnetic moment. The density-of-states of Fe(I) which has eight iron atoms as its nearest neighbors is different from that of Fe(II) which is surrounded by four iron atoms and four aluminum atoms. The former density is quite similar to that of iron metal, but the latter is considerably different. The d-bands of majority spin electrons mostly lie below the Fermi level, whereas those of minority spin electrons are extended across the Fermi level. The values of magnetic moments calculated for Fe(I) and Fe(II) are in good agreement wit experimental values. The difference between magnetic moments on the atom Fe(II) and on Fe atom in iron metal seems to be attributed to the change of the density-of-states near the top of the d-bands. It is evident that the electronic structures of Fe(II) atoms have been considerably affected by the neighboring aluminum atoms.

• 社団法人日本物理学会の論文
• 1976-11-15

著者

• ISHIDA Shoji

  Department of Physics, Faculty of Science, Kagoshima University

• Ishida Junji

  Department Of Physics Faculty Of Science Kagoshima University

• Ishida Junji

  Department Of Physics Faculty Of Science University Of Kagoshima

• ASANO Setsuo

  Institute for Solid State Physics, The University of Tokyo

• YAMASHITA Jiro

  Institute for Solid State Physics, The University of Tokyo

• Asano Setsuo

  Institute For Solid State Physics University Of Tokyo

• Ishida Shoji

  Department Of Physics Faculty Of Science Kagoshima University

• Yamashita Jiro

  Institute For Solid State Physics The University Of Tokyo

• Yamashita Jiro

  College Of Humanities And Science Nihon University

• Ishida Shuichi

  Division Of Cardiovascular Medicine Department Of Internal Medicine Ohmori Hospital Toho University

• Ishida Junji

  Department of Physics,Faculty of Science,Kagoshima University

• Yamashita Jiro

  Gifu Die & Mold Engineering Co., Ltd.

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