SPIN-VALVE SENSORS WITH DOMAIN CONTROL HARD MAGNET LAYERS

被引：20

作者：

KANAI, H

KANE, J

AOSHIMA, K

KANAMINE, M

UEHARA, Y

机构：

[1] Fujitsu Limited, Atsugi, 243-01, 10-1, Morinosato Wakamiya

来源：

IEEE TRANSACTIONS ON MAGNETICS | 1995年 / 31卷 / 06期

关键词：

D O I：

10.1109/20.490069

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 fabricated unshielded narrow-track NiFe/Cu/NiFe/FeMn spin-valve sensors with a height of 2 mu m and a track-width of less than 2 mu m using CoCrPt hard magnets (4 pi Mr= 5500 G, Hc= 1000 Oe) as a domain control layer. Barkhausen noise was completely suppressed by a longitudinal biasing field from the CoCrPt layers. The bias state was improved by applying a strong ferromagnetic exchange coupling field of 30 Oe between the free and pinned NiFe layers through a 14 Angstrom-thick Cu interlayer. We have also fabricated shielded CoCrPt magnet-biased spin-valve read heads with a track-width of 1.7 mu m. The heads had no Barkhausen noise and very low crosstalk noise.

引用

页码：2612 / 2614

页数：3

共 5 条

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