Enhanced stability against spin torque noise in current perpendicular to the plane self-biased differential dual spin valves

被引：4
|
作者：
Sekhar, M. Chandra [1 ,2 ]
Tran, M. [1 ]
Wang, L. [1 ]
Han, G. C. [1 ]
Lew, W. S. [2 ]
机构：
[1] ASTAR, Data Storage Inst, Singapore 117608, Singapore
[2] Nanyang Technol Univ, Sch Phys & Math Sci, Singapore 637371, Singapore
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2015年 / 374卷
关键词：
Read head; Spin transfer torque; Noise; Hard-disk drives; MAGNETIC MULTILAYERS; ANGULAR-DEPENDENCE; READ HEADS; MAGNETORESISTANCE; FIELD; CO/RU;
D O I：
10.1016/j.jmmm.2014.08.102
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We present a detailed study of spin transfer torque induced noise in self biased differential dual spin valves (DDSV) which could be potentially used as magnetic read-heads for hard-disk drives. Micro-magnetics studies of DDSV were performed in all the major magnetic configurations experienced by mad-heads and we show that in every case, self-biased DDSV provide a much stronger stability against spin-transfer torque noise than conventional spin valves. Provided are also insights on the influence of the dipolar interlayer coupling, shape anisotropy, exchange bias and relative orientation between the 2 free layers. Our results demonstrate the viability of DDSV read-heads for future hard disk doves generations. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码：740 / 743
页数：4
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