Patent ID: 6747919
Filing Date: 2004-06-08
Classification: G11B

Abstract:
A magneto-optical recording medium, comprising a substrate and a multi-layer film formed on the substrate, the multi-layer film including a first dielectric layer, a domain wall displacement layer, a switching layer, a recording layer, and a second dielectric layer in this order from the substrate side, a Curie temperature of the switching layer being lower than those of the domain wall displacement layer and the recording layer, a domain wall in the domain wall displacement layer being displaced to a higher temperature side in a region that reaches a temperature equal to or higher than a Curie temperature of the switching layer due to irradiation with a light beam for reproduction,wherein magnetic anisotropy of at least one layer selected from the group consisting of the domain wall displacement layer and the recording layer formed between recording tracks is made lower than that of said layers on the recording tracks, and magnetization of at least one magnetic layer selected from the group consisting of the domain wall displacement layer, the switching layer, and the recording layer is aligned in a predetermined direction in a region that is a half or more of a track width in a track width direction in at least a part of the recording tracks.