UNSHIELDED SPIN-VALVE SENSORS EXCHANGE-BIASED BY THIN TBCO LAYERS

被引：13

作者：

LEAL, JL ^{[1
]}

OLIVEIRA, NJ ^{[1
]}

RODRIGUES, LM ^{[1
]}

SOUSA, AT ^{[1
]}

FREITAS, PP ^{[1
]}

机构：

[1] Univ Tecn Lisboa, INST SUPER TECN, P-1000 LISBON, PORTUGAL

来源：

IEEE TRANSACTIONS ON MAGNETICS | 1994年 / 30卷 / 06期

关键词：

D O I：

10.1109/20.333903

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：

Unshielded spin-valve sensors were fabricated with trackwidth W varying from 25 to 2 micron and height h ranging from 7 to 1 micron. Magnetoresistance signals range from 7.5% to 3%. We find that heads with a geometry W/h greater than or equal to 4 are Barkhausen noise free. The effect of current density on sensor heating and output linearization is described. The pinned NiFe layer is exchange-biased to a 120 Angstrom thick TbCo layer, where the exchange field can be tuned by changing the TbCo thickness.

引用

页码：3831 / 3833

页数：3

共 9 条

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