First Principle Calculation of the Magnetocrystalline Anisotropy Energy of FePt and CoPt Ordered Alloys.

• Sakuma Akimasa

  Magnetic and Electronic Materials Research Laboratory, Hitachi Metals, Ltd., Kumagaya 360

書誌事項

タイトル別名

• First Principle Calculation of the Magn

抄録

The spin-polarized band calculations including spin-orbit interaction for L1₀-FePt and CoPt ordered alloys have been performed with LMTO-ASA method in the frame of local spin density functional approximation. It has been shown that strong uniaxial magnetic anisotropy of both alloys is brought about by a large spin-orbit coupling of Pt atom and a strong hybridization of Pt d bands with highly polarized Fe (Co)d bands. The obtained magnetocrystalline anisotropy energy (MAE) is about 16× 10⁶, J/m³ for FePt and 9× 10⁶, J/m³ for CoPt. It is also found that both MAE's have a trend of increase with increasing axial ratio c/a in the vicinity of measured c/a. This can be regarded as being associated with the behavior that the MAE's decrease with increasing band filling.

収録刊行物

• Ｊｏｕｒｎａｌ　ｏｆ　ｔｈｅ　Ｐｈｙｓｉｃａｌ　Ｓｏｃｉｅｔｙ　ｏｆ　Ｊａｐａｎ

  Ｊｏｕｒｎａｌ　ｏｆ　ｔｈｅ　Ｐｈｙｓｉｃａｌ　Ｓｏｃｉｅｔｙ　ｏｆ　Ｊａｐａｎ 63 (8), 3053-3058, 1994

  一般社団法人 日本物理学会

キーワード

• the LMTO method
• electronic structure
• LSD functional approximation
• FePt
• CoPt
• magnetocrystalline anisotropy energy
• magnetic moment

詳細情報

• CRID: 1390001204179500288
• NII論文ID: 110001956646
• NII論文ID: 130004535119
• NII論文ID: 210000098203
• NII書誌ID: AA00704814
• DOI: 10.1143/jpsj.63.3053
• BIBCODE: 1994JPSJ...63.3053S
• COI: 1:CAS:528:DyaK2cXmtFegtrw%3D
• ISSN: 13474073
• ISSN: 00319015
• NDL書誌ID: 3888689
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I3888689
• Web Site: http://journals.jps.jp/doi/pdf/10.1143/JPSJ.63.3053
• 本文言語コード: en
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