Current-Induced Domain Wall Motion in TbFeCo Wires With Perpendicular Magnetic Anisotropy

被引：31
|
作者：
Li, Songtian [1 ]
Nakamura, Hajime [1 ]
Kanazawa, Taichi [1 ]
Liu, Xiaoxi [1 ]
Morisako, Akimistu [1 ]
机构：
[1] Shinshu Univ, Spin Device Technol Ctr, Nagano 3808553, Japan
来源：
IEEE TRANSACTIONS ON MAGNETICS | 2010年 / 46卷 / 06期
关键词：
Current-induced domain wall motion; perpendicular magnetic anisotropy; pinning field; TbFeCo;
D O I：
10.1109/TMAG.2010.2042576
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：
Current-induced domain wall motion in TbFeCo wires with perpendicular magnetic anisotropy has been directly observed by Kerr microscope. The moving direction of domain wall is opposite to the current direction, which is in agreement with the spin torque transfer theory. The critical current density found in TbFeCo is lower than 10(7) A/cm(2), which is an order smaller than in other metallic materials reported so far. In addition, the critical current density gets increased with the increase of the pinning potential in TbFeCo thin film, which is also consistent with the theoretical prediction for a pinning dominant mechanism.
引用
收藏
页码：1695 / 1698
页数：4
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