EFFECTS OF UNIFORM MAGNETIC-FIELDS ON SHIELDED MR SENSORS

被引：6

作者：

FENG, JS ^{[1
]}

TIPPNER, J ^{[1
]}

KINNEY, BG ^{[1
]}

LEE, JH ^{[1
]}

SMITH, RL ^{[1
]}

CHUE, C ^{[1
]}

机构：

[1] IBM DEUTSCHLAND GMBH,W-5000 MAINZ,GERMANY

来源：

IEEE TRANSACTIONS ON MAGNETICS | 1991年 / 27卷 / 06期

关键词：

D O I：

10.1109/20.278920

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：

Externally applied magnetic fields can change the biasing of a magnetoresistive sensor. Under large-signal conditions, this produces preferential saturation of one polurity of the readback signal and changes the amount of waveform distortion. In a shielded MR sensor for hard disk applications, the sensitivity to external fields is affected by the shapes of the shields: tall shields are more sensitive to axial fields; asymmetrically shaped shields can increase the sensitivity to radial fields by converting them to axial fields at the sensor. Moderate fields can sometimes induce small, systematic changes into the small-signal spatial sensitivity.

引用

页码：4701 / 4703

页数：3