CONTRIBUTION TO K_u OF STRUCTURE-RELATED AND PSEUDODIPOLAR ANISOTROPY : AN EXPERIMENTAL DISCRIMINATION IN AMORPHOUS CoZrM (M = Nb, Ti, Pt) THIN FILMS

Abstract
The uniaxial magnetic anisotropy of CoZrM (M = Nb, Ti, Pt) films present large variations as a function of the pressure of the sputter gas. A thermomagnetic treatment permitted to show that K_u is the sum of two contributions K^d_u + K^d_u where K^d_u is related to the directional short range order and K^s_u originate from the anisotropy of Co atoms located in trigonal type clusters. The possibility of their experimental separation is related to the composition of the deposit.