Perpendicular magnetic anisotropy in Dy-Fe multilayered films

Author

Honda, S. ; Nishimura, S. ; Kusuda, T.

Author_Institution

Dept. of Phys. Electron., Hiroshima Univ., Japan

Volume

25

Issue

5

fYear

1989

fDate

9/1/1989 12:00:00 AM

Firstpage

4027

Lastpage

4029

Abstract

The periodicity dependence of the crystallographic structure and saturation magnetization are examined for Dy-Fe and Tb-Fe multilayered films prepared by an evaporation technique. The magnetization of Dy-Fe films changes nonlinearly with the periodic length Λ, while that of Tb-Fe decreases linearly with shortening of Λ. The perpendicular anisotropy K_u increases reciprocally with Λ owing to the surface anisotropy K_s. The value of K_s for Tb-Fe is about 1.7 times higher than for Dy-Fe at room temperature. The value of Dy-Fe increases with decreasing temperature; also, K_s at 80 K is about 1.5 times its value at room temperature

Keywords

dysprosium; iron; magnetic anisotropy; magnetic thin films; magnetisation; terbium; vapour deposited coatings; Dy-Fe multilayered films; Tb-Fe multilayered films; crystallographic structure; periodicity; perpendicular magnetic anisotropy; saturation magnetisation; surface anisotropy; Anisotropic magnetoresistance; Crystallization; Iron; Magnetic films; Magnetic properties; Magnetization; Perpendicular magnetic anisotropy; Temperature; X-ray diffraction; X-ray scattering;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.42512

Filename

42512