Patent ID: 7126886
Filing Date: 2006-10-24
Classification: G11B

Abstract:
1. A method for producing a magneto-optical recording medium including 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, wherein a Curie temperature of the switching layer is lower than those of the domain wall displacement layer and the recording layer, and in a region that reaches a temperature equal to or higher than the Curie temperature of the switching layer due to irradiation with a light beam for reproduction, a domain wall in the domain wall displacement layer moves to a higher temperature side, the method comprising: irradiating a light beam to an area between recording tracks of the magneto-optical recording medium while suppressing a magnetic field intensity from the outside to the magneto-optical recording medium to 50 Oe or less, thereby setting magnetic anisotropy of at least one layer selected from the group consisting of the domain wall displacement layer and the recording layer to be lower between the recording tracks than on the recording tacks; and forming micro-domains in at least one magnetic layer selected from the group consisting of the domain wall displacement layer, the switching layer, and the recording layer on the recording tracks by heating and cooling involved in irradiation with the light beam.