The effect of the initial layer on the reversal mechanism in CoCr films

The dependence of OR, H_c, and hysteresis loss is measured as functions of the angle with the applied field (H_a) as a parameter. It is reported that with increasing H_c perpendicular to /H_k values the orientation direction of the magnetization gradually changes from in-plane (OR_{perpendicular to} =0.7) to perpendicular (OR_{perpendicular to} =3.9). The angular dependence of H_c is closely related to the value of H_a. It was found that H_c/H_{c perpendicular to} drastically decreases at H_a=H_{c perpendicular to max} (159 kA/m) with decreasing H_a. The influence of the demagnetizing field on the angular dependence of the magnetic behavior in CoCr films is also examined.