Magnetic and structural properties of quaternary (Fe-Co-Ni)50Pt50 alloy thin films

Takao Suzuki; Hiroshi Kanazawa; Akimasa Sakuma

doi:10.1109/TMAG.2002.803103

Magnetic and structural properties of quaternary (Fe-Co-Ni)₅₀Pt₅₀ alloy thin films

Takao Suzuki, Hiroshi Kanazawa, Akimasa Sakuma

研究成果: Conference article › 査読

20 被引用数 (Scopus)

抄録

The intrinsic perpendicular magnetic anisotropy constant K_u for (Fe-Co-Ni)₅₀Pt₅₀ quaternary alloy and (Fe-Cr)₅₀Pt₅₀ alloy thin films is discussed as a function of structure and composition. Both M_s and the estimated K_u values obtained by the extrapolation to order parameter S = 1 using the dependence of K_u on S become maximum at the valence electron number n_elect = 8, being independent of alloy system. The magnetic anisotropy is determined to the first approximation by the Fermi energy, which changes with the number of electrons, but not by the band structure itself.

本文言語	English
ページ（範囲）	2794-2795
ページ数	2
ジャーナル	IEEE Transactions on Magnetics
巻	38
号	5 I
DOI	https://doi.org/10.1109/TMAG.2002.803103
出版ステータス	Published - 2002 9月
外部発表	はい
イベント	2002 International Magnetics Conference (Intermag 2002) - Amsterdam, Netherlands 継続期間: 2002 4月 28 → 2002 5月 2

ASJC Scopus subject areas

電子材料、光学材料、および磁性材料
電子工学および電気工学

文献へのアクセス

10.1109/TMAG.2002.803103

他のファイルとリンク

引用スタイル

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title = "Magnetic and structural properties of quaternary (Fe-Co-Ni)50Pt50 alloy thin films",

abstract = "The intrinsic perpendicular magnetic anisotropy constant Ku for (Fe-Co-Ni)50Pt50 quaternary alloy and (Fe-Cr)50Pt50 alloy thin films is discussed as a function of structure and composition. Both Ms and the estimated Ku values obtained by the extrapolation to order parameter S = 1 using the dependence of Ku on S become maximum at the valence electron number nelect = 8, being independent of alloy system. The magnetic anisotropy is determined to the first approximation by the Fermi energy, which changes with the number of electrons, but not by the band structure itself.",

keywords = "(Fe-Co-Ni-Cr)Pt ordered alloys, Magnetic anisotropy, Order parameter, Valence electron number",

author = "Takao Suzuki and Hiroshi Kanazawa and Akimasa Sakuma",

note = "Funding Information: Manuscript received May 7, 2002; revised June 3, 2002. The work was supported in part by Grant-in-Aid for the Academic Frontier Center of the Ministry of Education, Science, Sports and Culture for the Future Data Storage Materials Research Project.; 2002 International Magnetics Conference (Intermag 2002) ; Conference date: 28-04-2002 Through 02-05-2002",

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AU - Suzuki, Takao

AU - Kanazawa, Hiroshi

AU - Sakuma, Akimasa

N1 - Funding Information: Manuscript received May 7, 2002; revised June 3, 2002. The work was supported in part by Grant-in-Aid for the Academic Frontier Center of the Ministry of Education, Science, Sports and Culture for the Future Data Storage Materials Research Project.

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N2 - The intrinsic perpendicular magnetic anisotropy constant Ku for (Fe-Co-Ni)50Pt50 quaternary alloy and (Fe-Cr)50Pt50 alloy thin films is discussed as a function of structure and composition. Both Ms and the estimated Ku values obtained by the extrapolation to order parameter S = 1 using the dependence of Ku on S become maximum at the valence electron number nelect = 8, being independent of alloy system. The magnetic anisotropy is determined to the first approximation by the Fermi energy, which changes with the number of electrons, but not by the band structure itself.

AB - The intrinsic perpendicular magnetic anisotropy constant Ku for (Fe-Co-Ni)50Pt50 quaternary alloy and (Fe-Cr)50Pt50 alloy thin films is discussed as a function of structure and composition. Both Ms and the estimated Ku values obtained by the extrapolation to order parameter S = 1 using the dependence of Ku on S become maximum at the valence electron number nelect = 8, being independent of alloy system. The magnetic anisotropy is determined to the first approximation by the Fermi energy, which changes with the number of electrons, but not by the band structure itself.

KW - (Fe-Co-Ni-Cr)Pt ordered alloys

KW - Magnetic anisotropy

KW - Order parameter

KW - Valence electron number

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