NOL specular spin-valve heads using an ultrathin CoFe free layer

被引：19

作者：

Fukuzawa, H ^{[1
]}

Koi, K ^{[1
]}

Tomita, H ^{[1
]}

Fuke, HN ^{[1
]}

Kamiguchi, Y ^{[1
]}

Iwasaki, H ^{[1
]}

Sahashi, M ^{[1
]}

机构：

[1] Toshiba Co Ltd, Corp R&D Ctr, Saiwai Ku, Kawasaki, Kanagawa 2128582, Japan

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2001年 / 235卷 / 1-3期

关键词：

specular spin valve; NOL; free layer; head performance;

D O I：

10.1016/S0304-8853(01)00339-0

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This paper reports the film and head performance of specular spin valves with nano-oxide layer (NOL-SPSV). A large MR ratio of 17% was obtained by using an ultrathin CoFe free layer with a high conductance Cu layer, which decreases the sense current field of a free layer and brings good soft magnetic characteristics. Prototype heads with a read track width of 0.47-0.61 mum were fabricated by using NOL-SPSV films with an MR ratio of 14-15%, H-ua similar to 400Oe, and H-c similar to 5Oe. High output signal voltage of 8-11 mV/mum was realized in the NOL-SPSV heads. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：208 / 212

页数：5

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