Properties of amorphous CoZr(RE) (RE=Gd, Sm, Dy) films with various uniaxial anisotropies, prepared by a new process

Propriétés de films amorphes CoZr(RE) (RE=Gd, Sm, Dy) à variations anisotropes uniaxiales variables préparés par un nouveau procédé

D.H H Shin , H Niedoba , Y. Henry (1) , F Machizaud , Valerie Brien (2, 3) , D Chumakov , R Schafer , G Suran

1 LBME - Laboratoire de biologie moléculaire eucaryote
2 IMN - Institut des Matériaux Jean Rouxel
3 IJL - Institut Jean Lamour

If a DC magnetic field is applied parallel to the plane of amorphous CoZr(RE) thin films during sputter depositing, a uniaxial anisotropy is formed the direction of which depends upon the choice of RE substituted and its concentration. When RE = Gd a perpendicular anisotropy K, forms over a large concentration range, a spin reorientation process being at the origin of the process. A well-defined K, is developed also in CoFeZrGd and CoZrGdSm films. CoZrGdDy films exhibit simultaneously a perpendicular and an in-plane uniaxial anisotropy. The related magnetization process and domain structures are quite peculiar.

Domaines: Optique [physics.optics]; Chimie inorganique; Science des matériaux [cond-mat.mtrl-sci]; Matériaux

D.H H Shin, H Niedoba, Y. Henry, F Machizaud, Valerie Brien, et al.. Properties of amorphous CoZr(RE) (RE=Gd, Sm, Dy) films with various uniaxial anisotropies, prepared by a new process. Journal of Magnetism and Magnetic Materials, 2002, 249 (3), pp.422-427. ⟨10.1016/S0304-8853(02)00462-6⟩. ⟨hal-02882482⟩