Magneto-optical recording medium having multiple magnetic layers for magneto-optical recording medium
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United States of America Patent
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Jan 28, 1997
Grant Date -
N/A
app pub date -
Aug 24, 1995
filing date -
Aug 24, 1994
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A magneto-optic recording medium comprises on a substrate the first dielectric substance layer, a magneto-optic recording layer, the second dielectric substance layer and a reflective layer. The magneto-optic recording layer has, in the range of the Curie temperature Tc to (Tc-50) .degree.C., a value of a product of a saturated magnetization Ms and a coercive force Hc of not more than 4.times.10.sup.4 erg/cm.sup.3. The magneto-optic recording medium can be recorded at a magnetic field as low as 100 (Oe) with an excellent C/N.
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