FILM KOPLING PENGGANTI, ALAT EFEK RESISTANSI MAGNET, HEAD EFEKTIF RESISTANSI MAGNET DAN METODE PEMBUATAN FILM KOPLING PENGGANTI

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<x<3.2; and a value t as defined by: t = (Ra+Ro)/( 2ROOT 2•(Rb+Ro)) (where Ra, Rb and Ro denote the ion radii of the atoms A, B and O, respectively) satisfies 0.8<t<0.97.