Characterization of magnetic and thermal stability of PtMn spin valves

被引：7

作者：

Mao, SN ^{[1
]}

Gao, Z ^{[1
]}

机构：

[1] Seagate Recording Heads, Minneapolis, MN 55435 USA

来源：

IEEE TRANSACTIONS ON MAGNETICS | 2000年 / 36卷 / 05期

关键词：

exchange coupling; magnetic relaxation; PtMn; recording heads; spin valve; thermal stability;

D O I：

10.1109/20.908609

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：

A PtMn pinned top spin valve was made by DC sputtering with good GMR properties. GMR ratio of 14.7% and dR of 2.4 ohms/sq, were obtained for the optimum process, The pinning reversal process is a function of time, temperature, and applied field. For a typical spin valve the pining field reverses around 300 degreesC under a field of 1000 Oe which is sufficient for the head application, Furthermore, the PtMn antiferromagnetic (AFM) layer can be made into a thin layer of 100 Angstrom with a relatively high blocking temperature of 380 degreesC. Between room temperature and 200 degrees C, the GMR responses are highly reversible for both sheet films and finished PtMn spin valve heads.

引用

页码：2860 / 2862

页数：3

共 8 条

[1] Spin-valve giant magnetoresistance films with antiferromagnetic PtPdMn [J].