Magneto-optic recording structure and method

Details Magneto-optic recording structure and method Magneto-optic recording structure and method

G - Physics

11

B

352/31, 352/20.3

G11B 13/04 (2006.01) G11B 5/02 (2006.01) G11B 5/86 (2006.01) G11B 11/10 (2006.01) G11B 11/105 (2006.01)

Patent

CA 1320269

ABSTRACT OF THE DISCLOSURE A magnetic magneto-optic recording structure and method in which a magneto-optic active layer is positioned within the fringing magnetic fields of a magnetic recording medium, the structure preferably being disk-shaped. The magneto-optic layer is irradiated by a continuous wave laser beam, by way of a transparent substrate thereon, to locally reduce the coercivity of the magneto-optic layer, so that the magneto-optic layer becomes locally magnetized to align itself with the fringing magnetic fields created by the magnetization pattern of information previously recorded on the magnetic recording layer. The information thus recorded on the magneto-optic layer can be read out with a laser beam of lesser power, employing the Kerr effect.

541546

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