Title :
Perpendicular magnetic anisotropy in Dy-Fe multilayered films
Author :
Honda, S. ; Nishimura, S. ; Kusuda, T.
Author_Institution :
Dept. of Phys. Electron., Hiroshima Univ., Japan
fDate :
9/1/1989 12:00:00 AM
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 Ku increases reciprocally with Λ owing to the surface anisotropy Ks. The value of Ks 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, Ks 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;
Journal_Title :
Magnetics, IEEE Transactions on
