Abstract
Magnetic thin films [1, 2, 3, 4, 5, 6, 7] possess recording characteristics superior to those of the more conventional, thicker particulate media. Furthermore thin magnetic films allow a greater length of tape in a reel of given dimensions and thus enable higher volumetric densities and longer playing times to be achieved. Difficulties with corrosion and tribology delayed, for long time, the introduction of magnetic thin films into the market, but in the 1980s a break through was realized for high density longitudinal recording on magnetic rigid disks. Today, in rigid disk drives, magnetic thin films have replaced particulate coatings to a very large extent. Since 1989 thin film video tapes have been on the market. There are important current developments which will expand the future application of magnetic thin films for video tapes for high definition recording with significantly higher storage densities.
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