SPIN-VALVE SENSORS EXCHANGE-BIASED BY ULTRATHIN TBCO FILMS

被引：30

作者：

FREITAS, PP ^{[1
]}

LEAL, JL ^{[1
]}

MELO, LV ^{[1
]}

OLIVEIRA, NJ ^{[1
]}

RODRIGUES, L ^{[1
]}

SOUSA, AT ^{[1
]}

机构：

[1] IST,P-1000 LISBON,PORTUGAL

来源：

APPLIED PHYSICS LETTERS | 1994年 / 65卷 / 04期

关键词：

D O I：

10.1063/1.112304

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Ultrathin TbCo films are used to exchange-bias spin-valve sensors as an alternative to the commonly used FeMn films. Magnetoresistance values of 7.8% and sensitivities of 2.5%/Oe are demonstrated for spin-valve stripes where the pinned NiFe layer is exchange biased by a 120-angstrom thick TbCo film. The exchange field can be fine tuned by changing the TbCo layer thickness. A well-biased and linear spin-valve sensor was fabricated, with a height of 2 mum and a trackwidth of 25 mum, where the free layer is biased by the sense current.

引用

页码：493 / 495

页数：3

共 15 条

[1] EFFECT OF SUBSTRATE AND ANTIFERROMAGNETIC FILMS THICKNESS ON EXCHANGE-BIAS FIELD (INVITED) [J].