Title :
Induced, local anisotropy and anisotropy dispersion in amorphous Co-Zr-rare earth thin films
Author :
Rivoire, M. ; Ouahmane, H. ; Suran, G. ; Rivas, M. ; Corrales, J. ; Contreras, M.C.
Author_Institution :
Lab. de Magnetisme et Materiaux Magnetiques, CNRS, Meudon, France
fDate :
11/1/1993 12:00:00 AM
Abstract :
The authors point out that when prepared under adequate conditions, RF sputtered amorphous (Co0.93Zr0.07) 100-x Tbx thin films are obtained with fairly uniform magnetic properties and Ku. These layers are suitable for an investigation of the overall effect of the random local anisotropy Kloc upon the micromagnetic properties of the films. The experimental data were obtained by transverse biased initial susceptibility and ferromagnetic resonance measurements. The value of K loc was determined using the ripple theory. Kloc increases with increasing amount of Tb in the layers, which can be explained by the single-ion anisotropy mechanism
Keywords :
amorphous state; cobalt alloys; ferromagnetic properties of substances; ferromagnetic resonance; induced anisotropy (magnetic); magnetic properties of amorphous substances; magnetic susceptibility; magnetic thin films; metallic thin films; sputtered coatings; terbium alloys; zirconium alloys; amorphous Co-Zr-rare earth thin films; anisotropy dispersion; ferromagnetic resonance measurements; micromagnetic properties; radiofrequency sputtered amorphous (Co0.93Zr0.07 )100-xTbx thin films; random local anisotropy; single-ion anisotropy mechanism; transverse biased initial susceptibility; uniform magnetic properties; Amorphous materials; Anisotropic magnetoresistance; Lab-on-a-chip; Magnetic films; Magnetic properties; Magnetic resonance; Micromagnetics; Radio frequency; Sputtering; Zirconium;
Journal_Title :
Magnetics, IEEE Transactions on
