MAGNETIC RECORDING MEDIUM
PURPOSE: To maintain stable contact with a head at the time of high-density recording and to obtain a good signal to noise ratio by disposing a thin plasma- polymerized fine particle film and lubricating film on a thin ferromagnetic metallic film. CONSTITUTION: A perpendicularly magnetized film 9 consists of Co-Cr (79wt% Co) formed by a high-frequency sputtering method to 0.16μm thickness and the coercive force in the perpendicular direction thereof is 630(Oe). The thin plasma-polymerized fine particle film 10 of polyamide is formed thereon at a high frequency of 13.56(MHz) by using gaseous argon as a carrier gas. The lubricating layer 11 of stearic acid amide is further formed thereon to about 46Å. Since the cushion effect of the polymerized fine particles and the durability of the polymerized fine particles by the adhesion thereof as the film to the thin ferromagnetic metallic film are good, the characteristic to maintain the front surface shape of the magnetic head by the high-speed sliding contact with the magnetic head is improved and the contact state of the small spacing loss is stably obtd. COPYRIGHT: (C)1988,JPO&Japio
