Magnetic domain wall energy in Ni/Co superlattices

被引：3

作者：

Toyoki, Kentaro ^{[1
]}

Nishimura, Takashi ^{[1
]}

Harimoto, Shotaro ^{[1
]}

Shiratsuchi, Yu ^{[1
]}

Nakatani, Ryoichi ^{[1
]}

机构：

[1] Osaka Univ, Grad Sch Engn, Dept Mat Sci & Engn, Suita, Osaka 5650871, Japan

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2014年 / 372卷

关键词：

Magnetic domain wall energy; Ni/Co superlattice; Perpendicular magnetization; FILMS;

D O I：

10.1016/j.jmmm.2014.07.046

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The magnetic domain wall energy density sigma(W) of a Ni/Co superlattice possessing perpendicular magnetic anisotropy was determined using the magnetic domain theory derived by Kooy and Enz (1960). To determine sigma(W), we obtained the saturation magnetization, magnetic domain period, and perpendicular magnetic anisotropy energy by individual measurements. Using the magnetic domain period and the ferromagnetic layer thickness, we first determined the dipolar length. The estimated dipolar length was about 15-25 nm, which is in good agreement with the change in the magnetization curve with the ferromagnetic layer thickness. By using the dipolar length and saturation magnetization, the sigma(W) Ar was calculated to be 4-7 erg/cm(2). (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：41 / 46

页数：6

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