Spin-valve heads in the current-perpendicular-to-plane mode for ultrahigh-density recording

被引：34

作者：

Tanaka, A ^{[1
]}

Shimizu, Y ^{[1
]}

Seyama, Y ^{[1
]}

Nagasaka, K ^{[1
]}

Kondo, R ^{[1
]}

Oshima, H ^{[1
]}

Eguchi, S ^{[1
]}

Kanai, R ^{[1
]}

机构：

[1] Fujitsu Labs Ltd, Atsugi, Kanagawa 2430197, Japan

来源：

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

关键词：

current perpendicular to plane; magnetic heads; micromagnetics simulation; oxide layer; spin valve;

D O I：

10.1109/TMAG.2002.988916

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 have investigated the magnetoresistance properties of spin valves in the current-perpendicular-to-plane (CPP) mode. Conventional single spin-valve (SV) film shows resistance area product RA 81 mOmegamum(2), and resistance change area product DeltaRA = 0.35 mOmegamum(2). For a CPP element of a single SV with oxide layers, DeltaRA dramatically increased to 9.0 mOmegamum(2). Micromagnetics simulation revealed that the readback performance of the CPP head with low-impedance conventional SV film was much affected by sense current. On the other hand, the medium impedance CPP head, such as the SV film with oxide layers, shows several advantages compared with the low impedance head, such as higher output voltage, less influence by magnetic field of the sense current, and narrower core width.

引用

页码：84 / 88

页数：5

共 14 条

[1] Current-perpendicular (CPP) magnetoresistance in magnetic metallic multilayers [J].