Perpendicular magnetic anisotropy of PdCo and PtCo based multilayers

Author

Tsunashima, S. ; Nakamura, K. ; Uchiyama, S.

Author_Institution

Dept. of Electr. Eng., Nagoya Univ., Japan

Volume

26

Issue

5

fYear

1990

fDate

9/1/1990 12:00:00 AM

Firstpage

2724

Lastpage

2726

Abstract

Noble metal (Pt, Pd, Cu)/PdCo and Pt/PtCo multilayers were prepared by the RF sputtering method. Effective perpendicular anisotropy was measured by the torque method. It was found that Pd/PdCo and Pt/PdCo multilayers have positive surface anisotropy (K_s), while Cu/PdCo has a negative one. The origin of K_s was inferred to be a magnetoelastic energy of the PdCo layer which results from the lattice misfit between the noble metal and PdCo layers. In Pt/PtCo multilayers, K_s is much smaller than in Pt/PdCo and Pd/PdCo, indicating the absence of magnetoelastic surface anisotropy in PtCo-based multilayers

Keywords

cobalt alloys; copper; magnetic anisotropy; magnetic surface phenomena; magnetic thin films; magnetoelastic effects; palladium; palladium alloys; platinum; platinum alloys; sputtered coatings; Cu-PdCo; Pd-PdCo; Pt-PdCo; Pt-PtCo; RF sputtering method; lattice misfit; magnetoelastic energy; multilayers; perpendicular magnetic anisotropy; surface anisotropy; torque method; Anisotropic magnetoresistance; Cobalt alloys; Magnetic multilayers; Magnetic separation; Multilevel systems; Perpendicular magnetic anisotropy; Sputtering; Torque measurement; X-ray diffraction; X-ray scattering;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.104851

Filename

104851