0586175-A1 is referenced by 43 patents and cites 5 patents.

A magnetooptical recording medium includes a first magnetic layer in which data is to be stored, and a second magnetic layer. The first magnetic layer is a perpendicular magnetization film at both room temperature and raised temperatures. The second magnetic layer is a perpendicular or in-plane magnetization film at room temperature and changed to an in-plane or perpendicular magnetization film at raised temperatures. A recording method includes, for example, a step of projecting a light spot on the recording medium from the side of the second magnetic layer, a step of changing only a high-temperature area within a light spot projection portion of the second magnetic layer to an in-plane or perpendicular magnetization film, and a step of detecting information stored in the first magnetic layer by detecting a reflective light from the recording medium.; The reflective light is influenced by magneto-optic effect of the perpendicular magnetization film portion.

Title
A magnetooptical recording medium and information recording and reproducing methods using the recording medium.
Application Number
EP19930306690 19930824
Publication Number
0586175 (A1)
Application Date
August 24, 1993
Publication Date
March 9, 1994
Inventor
Honguu Kazuoki
JP
Omata Hiroshi
JP
Nishimura Naoki
JP
Assignee
Canon
JP
IPC
G11B 11/10
G11B 11/00
G11B 11/105
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