| 摘要 |
A magneto-optical playback method employing a magneto-optical recording medium having a playback magnetic layer, a recording magnetic layer, a transparent dielectric layer and a reflecting layer. The playback magnetic layer is so formed that its playback output Rx theta k (in which R and theta k represent the reflectivity and the Kerr rotation angle of the recording medium, respectively) is sufficiently small at any point lower than a threshold temperature Tth at which the magnetization thereof is inverted. According to this method, a playback output is obtained by inverting the magnetization of merely the playback magnetic layer alone in a playback mode, thereby achieving ultrahigh-density recording with enhanced linear density (recording density on record tracks) and transverse-to-track density while improving the playback signal-to-noise ratio.
|
