DC resistance instability in magnetoresistive recording heads

被引：0

作者：

Du, SX ^{[1
]}

Villaume, GM ^{[1
]}

Henderson, MR ^{[1
]}

机构：

[1] Seagate Technol Inc, Recording Head Operat, Minneapolis, MN 55435 USA

来源：

IEEE TRANSACTIONS ON MAGNETICS | 2000年 / 36卷 / 05期

关键词：

AMR; DC bias; GMR; instability;

D O I：

10.1109/20.908484

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：

A resistance instability under DC bias condition in anisotropic magnetoresistive (AMR) recording heads has been observed. AC-coupled reader output voltage fluctuation across the biased sensor shows a square wave pulse profile with pulse width ranging from 1 to 500 mus, An irregular pattern of pulse amplitude, width, and occurrence has been observed, Such instability has been found sensitive to the bias current, but not to external magnetic fields up to 200 Oe, Surface treatment has been found effective in eliminating this instability in AMR recording heads, Intermittent shorting due to metal smearing has been suggested as the mechanism that supports the above observations.

引用

页码：2493 / 2495

页数：3

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