Dynamic information storage or retrieval – Storage medium structure – Optical track structure
Patent
1995-05-02
1997-07-01
Edun, Muhammad N.
Dynamic information storage or retrieval
Storage medium structure
Optical track structure
369100, 369 13, G11B 700
Patent
active
056445660
ABSTRACT:
An intermediate layer is formed between a memory layer and a writing layer. The intermediate layer shows in-plane magnetization at room temperature, and perpendicular magnetization within a temperature range within which the coercive force of the memory layer is lower than that of the writing layer. The Curie point of the intermediate layer is lower than that of the memory layer. Like a conventional method, light-intensity modulation overwriting is performed by irradiating laser light whose intensity has been modulated between high level and low level while applying a recording magnetic field after performing an initialization. Even when there are variations in the raised temperature by the irradiation of laser light of high level, it is possible to perform stable overwriting with light-intensity modulation by satisfactorily restraining the exchange forces between the intermediate layer and the writing layer from causing coupling.
REFERENCES:
patent: 5278810 (1994-01-01), Takahashi et al.
Hirokane Junji
Katayama Hiroyuki
Mieda Michinobu
Nakayama Junichiro
Ohta Kenji
Conlin David G.
Edun Muhammad N.
Michaelis Brian L.
Sharp Kabushiki Kaisha
LandOfFree
Magneto-optical recording medium does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Magneto-optical recording medium, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magneto-optical recording medium will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-603332