Title :
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
fDate :
11/1/1993 12:00:00 AM
Abstract :
The formation of coherent magnetic anisotropy is investigated in amorphous (Co0.93Zr0.07)100-x (RE)x (RE=rare earth) films as a function of the magnitude of the magnetic field, Hd, 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, Kp, and of Ku. The development of Kp is linked to Hd. Kp is negligible for very small Hd, 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;
Journal_Title :
Magnetics, IEEE Transactions on
