Abstract
Spinel ferrite Co0.10Fe2.90O4 film of 0.21 μm thickness was formed by plasma assisted MO-CVD using mixed vapor containing Fe(C5H7O2)3, Co(C5H7O2)3, and O2 on a glass disk substrate, whose saturation magnetization and coecivity in the direction normal to the film plane at 8 kOe were 210 emu/cc and 1250 Oe, respectively. X-ray diffraction patterns and SEM image of the film showed that the film had columnar structure with <100> preferred orientation. Magnetic recording tests were performed for the disk using a MIG type ring head of 0.25-μm gap length at relation speed of 9.4 m · s-1 and flying height of 0.1 μm. The recording density D50 was 75 kFRPI and the reproduced waveform at 2.7 kFRPI showed dipulse containing longitudinal component.
