INCIDENT ANGLE DEPENDENCE OF RECORDING CHARACTERISTICS OF VACUUM-DEPOSITED CO-CR FILMS

Investigation is reported of the relation between incident angle of evaporated atoms onto a substrate and the magnetic properties, microstructure and recording characteristics of Co-Cr films. The Co-Cr films deposited with the atoms of oblique incident angle have the easy axis of magnetization which tilts from the film normal, and consist of columnar grains which tilt from the film normal. For films deposited at an incident angle from 55° to 20°, the isolated pulse waveform is not a dipulse, but a single-peak-like pulse with narrow pulse width. An eye pattern is observed clearly using Co-Cr tapes with little compensation of amplitude of an equalizer at short wavelength region. © 1990 IEEE