G - Physics – 11 – B
Patent
G - Physics
11
B
G11B 11/14 (2006.01) G11B 11/105 (2006.01)
Patent
CA 2087288
A magneto-optical recording medium has a recording layer including at least two magnetic layers. The magneto-optical recording medium satisfies a condition of ¦A1.K1 - A2.K2 ¦ < 2.0 (erg2/cm4) wherein A1, K1, A2, and K2 respectively represent an exchange constant of a first magnetic layer, a perpendicular magnetic anisotropy of a first magnetic layer, an exchange constant of a second magnetic layer, and a perpendicular magnetic anisotropy of a second magnetic layer. First and Second magnetic layers are made of TbFeCo.
L'invention est un support d'enregistrement magnéto-optique dont la couche d'enregistrement comprend au moins deux couches magnétiques. Le support d'enregistrement magnéto-optique satisfait à la condition ¦A1.K1 - A2.K2¦ < 2,0 (erg2/cm4) où A1, K1, A2 et K2 représentent respectivement la constante d'échange de la première couche magnétique, l'anisotropie magnétique perpendiculaire de la première couche magnétique, la constante d'échange de la seconde couche magnétique et l'anisotropie magnétique perpendiculaire de la seconde couche magnétique. Les deux couches magnétiques sont faites de TbFeCo.
Hirokane Junji
Katayama Hiroyuki
Mieda Michinobu
Nakayama Junichiro
G. Ronald Bell & Associates
Sharp Kabushiki Kaisha
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