MAGNETIC RECORDING MEDIUM AND ITS PRODUCTION

摘要

PROBLEM TO BE SOLVED: To provide a magnetic recording medium having excellent wear resistance and high reliability in which an oxide protective film is formed with good adhesion by a simple method on a thin film comprising a magnetic oxide. SOLUTION: This medium is produced by forming an oxide magnetic thin film on a nonmagnetic supporting body and forming a protective film thereon. In this process, a solid solution region of >100Åthickness of the oxide magnetic thin film and the protective film is formed between the oxide magnetic thin film and the protective film. The thickness of the solid solution region is controlled to <=12% of the sum thickness of the magnetic thin film and the solid soln. region.