TB FE MULTILAYERED FILMS STUDIED BY CONVERSION ELECTRON MOSSBAUER SPECTROMETRY AND KERR EFFECT/

Fe/Tb multilayers of fixed Tb thickness (1.9 nm) and various Fe thichn esses (in the range 0.2-3.3 nm) have been prepared by rf-pulverization on Si(111) substrates. Conversion Electron Mossbauer Spectrometry was used to get information on the structure and the spin texture of the multilayers. Polar Kerr hysteresis loops have been used to obtain the global magnetic properties. The iron layers are amorphous up to 2.1 nm and the magnetic anisotropy lies in the plane of the layers above e(T b)/e(Fe) = 0.9.