Current progress of single-pole-type GMR heads for perpendicular recording

被引：10

作者：

Ito, K ^{[1
]}

Kawato, Y ^{[1
]}

Arai, R ^{[1
]}

Okada, T ^{[1
]}

Fuyama, M ^{[1
]}

Hamakawa, Y ^{[1
]}

Mochizuki, M ^{[1
]}

Nishida, Y ^{[1
]}

Ichihara, T ^{[1
]}

Takano, H ^{[1
]}

机构：

[1] Hitachi Ltd, Cent Res Lab, Kokubunji, Tokyo 1858601, Japan

来源：

IEEE TRANSACTIONS ON MAGNETICS | 2002年 / 38卷 / 01期

关键词：

external field robustness; head skew; perpendicular magnetic recording; single pole head;

D O I：

10.1109/TMAG.2002.988932

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：

We studied several proposals to address the problems encountered when single-pole-type giant magnetoresistive (SPT-GMR) heads are applied to an actual recording system. The first area of problems was regarding side erasure when there is a head skew. We fabricated a trapezoid-shaped main pole using a focus-ion-beam trimming or using a new wafer-processing technique and examined their write performances and their effects on reducing side erasure. The second area of problems concerned the stray field robustness of SPT-GMR heads when combined with a double-layered perpendicular recording medium. We tried to optimize the robustness and write performance by changing the width of a yoke in the main pole or by positioning a shield above the main pole. The stray field robustness and write performance were adequate in both cases, but a tradeoff relationship exists between both performances.

引用

页码：175 / 180

页数：6

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