Thermally Assisted Current-Induced Domain Wall Motion in Tb/Co Magnetic Multilayered Wire With a High Domain Wall Propagation Field

被引：8

作者：

Kurokawa, Yuichiro ^{[1
]}

Bang, Do ^{[1
,2
]}

Awano, Hiroyuki ^{[1
]}

机构：

[1] Toyota Technol Inst, Informat Storage Mat Lab, Nagoya, Aichi 4688511, Japan

[2] Vietnam Acad Sci & Technol, Inst Mat Sci, Hanoi, Vietnam

来源：

IEEE TRANSACTIONS ON MAGNETICS | 2017年 / 53卷 / 07期

关键词：

Tb/Co; current-induced domain wall motion; perpendicular magnetic anisotropy; thermally assisted; DRIVEN; TORQUE;

D O I：

10.1109/TMAG.2017.2676086

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：

We investigated the current-induced domain wall (DW) motion in Tb/Co multilayered wire with various substrate temperatures (T-s). The coercivity and DW propagation field of the Tb/Co multilayered film are 10 and 8 kOe, respectively. In the Tb/Co wire, the DW velocity is 2.4 m/s for a current density of 4.5x10(11) A/m(2) at room temperature. At T-s = 343 K, we also found that the DW velocity is about two times higher than that at room temperature. The enhancement of DW velocity can be attributed to thermally activated creep DW motion and/or the reduction of the depinning current density.

引用

页数：3

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