Perpendicular magnetic recording medium
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United States of America Patent
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Issued Date -
Feb 14, 2002
app pub date -
Jul 10, 2001
filing date -
Jul 11, 2000
priority date (Note) -
Abandoned
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Abstract
A perpendicular magnetic recording medium includes a multi-layer magnetic recording layer supported on a non-magnetic substrate. One of the magnetic recording layers includes a magnetic film of a rare earth-transitional metal alloy amorphous material. An embodiment of the rare earth-transitional metal alloy amorphous material additionally includes Cr to improve corrosion resistance. Another of the magnetic recording layers includes a magnetic layer of a CoCr alloy crystalline film. In combination, the multilayer magnetic recording layer provides increased recording density, lower noise, and increased durability.
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