GMR and TMR Films Using GdFe Alloy with Perpendicular Magnetization.

This is the authors' abstract. We don't add key points for this paper.

We observed hysteresis loops of resistance in GMR and TMR films using GdFe alloy with perpendicular. The MR ratio of GMR film was approximately 0.036% when the thickness of Cu film was 4 nm. Al50Cu50 film with a surface roughness of approximately 0.2 nm was used for the under electrode of TMR film. The Al2O3 film was prepared by direct deposition on an Al2O3 target, and atomic ratio O/Al of the Al2O3 film was 1.52 according to an RBS analysis. The MR ratio of TMR film was approximately 0.95% when the thickness of Al2O3 film was 2.2 nm.