Patent ID: 7210155
Filing Date: 2007-04-24
Classification: G11B

Abstract:
1. A magneto-optical recording medium comprising: a memory layer for recording information; an auxiliary memory layer magnetically coupled to the memory layer and having weaker perpendicular magnetic anisotropy than that of the memory layer, the auxiliary memory layer comprising a first auxiliary memory layer and a second auxiliary memory sublayer having different Curie temperatures; and an in-plane magnetization-inducing layer principally comprising cobalt, the in-plane magnetization-inducing layer causing in-plane magnetization orientation of the auxiliary memory layer by a magnetic exchange interaction, wherein the second auxiliary memory sublayer adjoins the in-plane magnetization-inducing layer and the first auxiliary memory sublayer adjoins the memory layer, the second auxiliary memory sublayer having a Curie temperature lower than that of the memory layer and the first auxiliary memory sublayer.