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Abstract

A magneto-optic recording structure is disclosed in which the magnetic recording layer is sandwiched between an opaque substrate and a magneto-optic layer structure. The magneto-optic recording structure comprises a substrate, a magnetic recording layer coated on the substrate and a magneto-optic layer structure coated on the magnetic recording layer. The arrangement of layers permits both the magnetic and magneto-optic layers to be addressed from the same side. The magnetic recording layer and the magneto-optic layer structure can be coated on both sides of the substrate, to make double-sided disks. The recording structure also allows the use of opaque substrates. An information recording and playback device based on the magneto-optic recording structure comprises a magnetic recording head disposed adjacent the magneto-optic layer adjacent the magneto-optic layer structure for recording and reading the magneto-optic active layer. A method for recording data on the magneto-optic layer. A method for recording data on the magneto-optic recording structure comprises the steps of recording data in the magnetic recording layer through the magneto-optic layer structure to produce a fringing magnetic field and then locally irradiating an area of the magneto-optic layer structure to raise the temperature of the area so that the area aligns itself with the fringing magnetic field.

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