In this work we present a theoretical study of an alternative method for th
e magnetic anisotropies constant measurement. We propose to use circular di
scs of magnetic material that are magnetized under the action of a constant
amplitude rotating magnetic field. By analyzing the different harmonic amp
litudes of e.m.f. induced in a pick-up coil it is possible to obtain the an
isotropy constant, K, and the in-plane anisotropy direction. (C) 1999 Elsev
ier Science B.V. All rights reserved.