Exchange coupling film, magnetoresistance effect device, magnetoresistance effective head and method for producing exchange coupling film

摘要

An exchange coupling film of the present invention comprises a ferromagnetic layer and a pinning layer which is provided in contact with the ferromagnetic layer for pinning a magnetization direction of the ferromagnetic layer, the pinning layer comprising an (AB)2Ox layer, wherein A is a single element, and B is a single element, and wherein : O denotes an oxygen atom; 2.8