熱処理したスピンバルブ膜の交換結合磁界の膜厚依存性  [in Japanese] Layer Thickness Dependence of the Exchange-Coupling Field in Annealed Spin-Valve Films  [in Japanese]

The exchange-coupling field in spin-valve films containing FeMn and MnIr antiferromagnetic films before and after annealing was investigated. The decrease in the exchange-coupling field caused by annealing was reduced by using a thin antiferromagnetic film. The stability of exchange-coupling field during annealing also depends on the capping material, such as Cu, CoFe and NiFe. A stress relaxation model assuming a strain in antiferromagnetic films partially suggests such a connection between the film thickness and the annealing effect. In addition, the NiFe capping layer thickness affects the exchange-coupling field in annealed spin-valve films containing MnIr antiferromagnetic films.