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

页码：1672 / 1674

页数：3

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