Experimental method for determining the total demagnetizing factor of thin amorphous ribbons

The basis of the method is the influence of the demagnetizing field on the maximum rate of magnetic flux change of the amorphous ribbon. The method allows to determine the demagnetizing factor of thin amorphous ribbons in a wide range of its values. With the proposed method the frequency dependence of the demagnetizing factor of amorphous ribbon with a helical magnetic anisotropy was found out.

► Demagnetization factor N, the rate of magnetization reversal and related counter-emf.
► Demagnetization factor of ribbons having a different ratio of geometric dimensions.
► Frequency dependence of N in the case of helical magnetic anisotropy.