Magnetic anisotropy induced by field applied during deposition in sputtered amorphous CoZr-rare earth thin films

Author

Suran, G. ; Ouahmane, H. ; Sztern, J.

Author_Institution

Lab. de Magnetisme et Materiaux Magnetiques, CNRS, Meudon, France

Volume

29

Issue

6

fYear

1993

fDate

11/1/1993 12:00:00 AM

Firstpage

3055

Lastpage

3057

Abstract

The formation of coherent magnetic anisotropy is investigated in amorphous (Co_0.93Zr_0.07)_100-x (RE)_x (RE=rare earth) films as a function of the magnitude of the magnetic field, H_d, applied during deposition. The direction of the induced anisotropy depends upon the peculiar rare earth substituted. For RE=Sm and Gd, a biaxial anisotropy is formed composed of a perpendicular anisotropy, K_p, and of K_u. The development of K_p is linked to H_d. K_p is negligible for very small H_d, and increases strongly. The short range chemical inhomogeneities are progressively suppressed as H _d is increased. A mechanism is suggested to explain the results

Keywords

cobalt alloys; ferromagnetic properties of substances; ferromagnetic resonance; gadolinium alloys; induced anisotropy (magnetic); magnetic domains; magnetic hysteresis; magnetic properties of amorphous substances; magnetic thin films; samarium alloys; sputtered coatings; zirconium alloys; CoZrGd; CoZrSm; biaxial anisotropy; coherent magnetic anisotropy; domain structure; ferromagnetic resonance; hysteresis loop; induced anisotropy; magnetic field; perpendicular anisotropy; short range chemical inhomogeneities; sputtered amorphous thin film; Amorphous magnetic materials; Amorphous materials; Anisotropic magnetoresistance; Earth; Magnetic anisotropy; Magnetic fields; Magnetic films; Magnetic materials; Samarium alloys; Sputtering;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.281115

Filename

281115