Magneto-optical recording medium

Details Magneto-optical recording medium Magneto-optical recording medium

1999-06-18

2000-09-12

Pianalto, Bernard

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Physical dimension specified

428694RE, 428694MM, 428694EC, 428694IS, 428694TP, 428900, G11B 566

Patent

active

061175447

ABSTRACT:
A recording layer and a flux adjustment layer have different magnetic polarities so that their magnetizations are countervailed at room temperature, with the result that a weakened leakage magnetic flux is released therefrom. A reproducing layer, a reproducing assist layer and an in-plane magnetization layer exhibit in-plane magnetization at room temperature. In a first temperature area having a temperature not more than the critical temperature of the reproducing layer, the reproducing layer 1 exhibits in-plane magnetization so that magnetization of a recording magnetic domain is not copied to the reproducing layer. In contrast, a second temperature area having a temperature rise between the critical temperature and the Curie temperature of the reproducing layer, the flux adjustment layer and the in-plane magnetization layer have reached their Curie temperatures and lost their magnetization; thus, a leakage magnetic flux generated by the magnetization of the recording magnetic domain is copied to the reproducing assist layer that is in a perpendicular magnetization state, and further copied to the reproducing layer. Moreover, in a third temperature area having a temperature rise exceeding the Curie temperature of the reproducing layer, the reproducing layer has lost its magnetization.

REFERENCES:
patent: 5777953 (1998-07-01), Hirokane et al.
patent: 5939187 (1999-08-01), Hirokane et al.
"Magnetically Induced Superresolution Using Interferential In-Plane Magnetization Readout Layer". (J. Hirokane, et al., Jpn. J. Appl. Phys. vol. 35, Part 1, No. 11, Nov. 1996, pp. 5701-5704).
"Magnetically Induced Superresolution Magneto-Optical Disk Using an In-Plane Magnetization Mask Layer", by J. Hirokane, et al., in Japan Applied Magnetic Society Bulletin, vol. 21, No. 8, pp. 1076-1081(1997). In Japanese with translation of relevant passages. (No Month Avail.).

Affiliated with

Also associated with

Rating

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.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-93893