Magnetic properties of electron beam evaporated CoPt alloy thin films

被引：37
|
作者：
Yamada, Y
Suzuki, T
Abarra, EN
机构：
[1] Information Storage Materials Laboratory, Toyota Technological Institute, Tempaku-ku, Nagoya 468
来源：
IEEE TRANSACTIONS ON MAGNETICS | 1997年 / 33卷 / 05期
关键词：
D O I：
10.1109/20.619517
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A systematic study magnetic properties of CoPt alloy thin films as a function of composition and substrate deposition temperature has been carried out. The concentration dependence of the intrinsic perpendicular magnetic anisotropy constant K-u at ambient temperature reveals a maximum at about 25 at% Pt. Films of Co75Pt25 deposited onto Al2O3(0001) substrates held at temperatures from 180 degrees C to 400 degrees C exhibit a strong perpendicular magnetic anisotropy (1.5x107 erg/cm(3)). This strong anisotropy is closely related to the ordered state of hcp structure.
引用
收藏
页码：3622 / 3624
页数：3
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