CROSS-TRACK CHARACTERISTICS OF SHIELDED MR HEADS

被引:18
作者
YUAN, SW
BERTRAM, HN
BHATTACHARYYA, MK
机构
[1] UNIV CALIF SAN DIEGO,CTR MAGNET RECORDING RES,LA JOLLA,CA 92093
[2] HEWLETT PACKARD CORP,PALO ALTO,CA 94304
基金
美国国家科学基金会;
关键词
D O I
10.1109/20.312291
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 three-dimensional micromagnetic model of the cross-track response of shielded magnetoresistive heads is presented in order to assess MR head performance in high track density recording applications. Both the down-track output pulse-width and the off-track output asymmetry decrease as the shield-to-shield separation decreases. For the same biasing level, the off-track asymmetry increases with the stripe height Proper initialization is found to be crucial to the head response profile. If the horizontal magnetization components of the MR and the adjacent layer are not in an anti-parallel state, larger off-track asymmetry occurs. For improperly initialized heads, side-reading noise arises from local reversal of edge magnetizations in the un-pinned layer, which could be reduced by the presence of ideal shields.
引用
收藏
页码:381 / 387
页数:7
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