G - Physics – 11 – B
Patent
G - Physics
11
B
G11B 11/10 (2006.01) G11B 11/105 (2006.01)
Patent
CA 2060548
A magneto-optic recording and reproducing medium is formed of a reproduction layer composed mainly of GdFeCo and having a saturation magnetization of at least 450 emu/cc and a coercive force of not more than 4 kOe, and a recording layer composed mainly of TbFeCo, having a coercive force of at least 5 kOe, and having a magnetization of not more than 300 emu/cc when it is a transition metal-predominant film and not more than 200 emu/cc when it is a rare earth-predominant film.
Aratani Katsuhisa
Nakao Isamu
Ohta Masumi
Gowling Lafleur Henderson Llp
Sony Corporation
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