FILM SURFACE VERTICAL ENERGIZATION TYPE GIANT MAGNETORESISTANCE ELEMENT AND MAGNETIC DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a film surface vertical energization type giant magnetoresistance (CPP-GMR) element and magnetic device having a high-output obtained by improving a non-magnetic intermediate layer.SOLUTION: A film surface vertical energization type giant magnetoresistance (CPP-GMR) element has a structure having a non-magnetic intermediate layer 14 (a spacer layer) arranged between Heusler alloy or iron cobalt based alloy thin films using as ferromagnetic layers 13 and 15. The Heusler alloy or iron cobalt based alloy thin film consists of a ferromagnetic alloy having a L2ordered structure, a body centered cube structure or a B-2 ordered structure, and the non-magnetic intermediate layer (the spacer layer) has an AgMgmetal compound (4≤x25 [at.%]). The magnetic device has the film surface vertical energization type giant magnetoresistance (CPP-GMR) element.SELECTED DRAWING: Figure 3