Field-anneal effects on magnetic and magnetoresistive properties of Fe-Mn, Ir-Mn and NiO spin valves

被引：0

作者：

IBM Storage Systems Div, San Jose, United States ^{[1
]}

机构：

来源：

IEEE Trans Magn | / 5 pt 1卷 / 2607-2609期

关键词：

Annealing - Antiferromagnetic materials - Iridium alloys - Iron alloys - Magnetic anisotropy - Magnetoresistance - Magnetron sputtering - Nickel compounds;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Spin valves with a Co film as a reference layer and with antiferromagnetic Fe-Mn, Ir-Mn and NiO films as pinning layers were deposited in a DC magnetron sputtering system, and annealed in a field parallel, perpendicular or antiparallel to the easy axis of the reference layer. After anneal, their ferromagnetic coupling and unidirectional anisotropy fields, as well as anisotropy and giant magnetoresistance coefficients were characterized at room temperature. Four critical temperatures were determined from variations of these properties with anneal temperatures. These spin valves were evaluated based on these properties and critical temperatures. Approaches to improvements of these spin valves for uses as read sensors were discussed.

引用