In-Plane Anisotropy and Recording Characteristics of Vacuum Deposited Co-Cr Films

In fabricating Co-Cr films using a continuous vacuum deposition system, the angle at which the vapor beam is incident on the substrate affects the magnetic properties and recording characteristics of the resulting film. Co-Cr films deposited at incident angles from 55° to 20° and from 70° to 20° are anisotropic, while films deposited at incident angles from 20° to ¿20° are isotropic in the film plane. The azimuth angle dependence of the reproduced output in these films correlates fairly well with the angular dependence of Mr in the film plane. The isolated playback wave-form from films deposited with the angle of incidence ranging from 55° to 20° has a MMF dependence in the normal head scanning direction, whereas that of films deposited from 70° to 20° is independent of the MMF in both the normal and the reverse head scanning directions.