Patent ID: 6424601
Filing Date: 2002-07-23
Classification: G11B

Abstract:
A magneto-optical medium comprising at least a magneto-optical recording layer on which information is recorded; a first auxiliary magnetic layer; and a second auxiliary magnetic layer wherein, when irradiated with a reproducing light beam, a recording magnetic domain recorded in the magneto-optical recording layer is magnified and transferred to the second auxiliary magnetic layer through the first auxiliary magnetic layer and information is reproduced from the magnetic domain of the second auxiliary magnetic layer which has thus been magnified and transferred, characterized in that:the thickness of the first auxiliary magnetic layer is not less than the thickness of a magnetic wall of the first auxiliary magnetic layer, wherein the radius of the magnetic domain transferred to the first auxiliary magnetic layer is smaller than the radius of the recording magnetic domain of the magneto-optical recording layer and the radius of the magnetic domain transferred to the second auxiliary magnetic layer is larger than the radius of the recording magnetic domain of the magneto-optical recording layer, and if the Curie temperatures of the magneto-optical recording layer, the first auxiliary magnetic layer and the second auxiliary magnetic layer are respectively TC0, TC1 and TC2, and the critical temperatures (TCR) of the first auxiliary magnetic layer and the second auxiliary magnetic layer are respectively TCR1 and TCR2, room temperatureCR2CR1C0, TC1, TC2.