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
收藏
页码：208 / 212
页数：5
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