Perpendicular Magnetic Anisotropy of CoSiB/Pt Multilayers

被引：16
|
作者：
Park, J. S. [1 ]
Yim, H. I. [1 ]
Hwang, J. Y. [2 ]
Lee, S. B. [2 ]
Kim, T. W. [3 ]
机构：
[1] Sookmyung Womens Univ, Dept Phys, Seoul 140742, South Korea
[2] Hanyang Univ, Dept Elect & Commun Engn, Seoul 133791, South Korea
[3] Sejong Univ, Dept Adv Mat Engn, Seoul 143747, South Korea
来源：
JOURNAL OF THE KOREAN PHYSICAL SOCIETY | 2010年 / 57卷 / 06期
关键词：
Perpendicular magnetic anisotropy; Amorphous ferromagnetic; Magnetic multilayer; Coercivity; CoSiB;
D O I：
10.3938/jkps.57.1672
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We have investigated the perpendicular magnetic anisotropy of [CoSiB t(CoSiB)/Pt t(Pt)](n) multilayers as a function of the CoSiB and the Pt thicknesses and the number of repetition of the CoSiB/Pt bilayers. The coercivity (H(c)) and the saturation magnetization (M(s)) of the amorphous ferromagnetic material Co(75)Si(15)B(10) were taken to be 1.6 Oe and 407 emu/cm(3), respectively. The H(c) in [CoSiB t(CoSiB)/Pt 14 angstrom](5) multilayers increases with increasing t(CoSiB) to reach a maximum at t(CoSiB) = 3 angstrom and then decreases for t(CoSiB) > 3 angstrom. The highest H(c) of 224 Oe and the highest perpendicular magnetic anisotropy K(u) of 2 x 10(6) erg/cm(3) were obtained in the [CoSiB 3 angstrom/Pt 14 angstrom](5) multilayer. Additional Pt layers do not contribute to the perpendicular magnetic anisotropy. The single-domain structure evolves into a striped multidomain structure as the bilayer repetition number n increases above 6.
引用
收藏
页码：1672 / 1674
页数：3
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