Optical-thermal magnetic storage medium

Details Optical-thermal magnetic storage medium Optical-thermal magnetic storage medium

1991-09-03

1993-09-28

Thibodeau, Paul J.

Stock material or miscellaneous articles

Composite

Of inorganic material

428694RE, 428694GR, 428900, 369 13, G11B 566

Patent

active

052485650

ABSTRACT:
An optico-thermal magnetic recording medium comprises a substrate, a first layer of a ternary amorphous alloy represented by Tb.sub.x (Fe.sub.1-y Co.sub.y).sub.1-x or Dy.sub.x (Fe.sub.1-y Co.sub.y).sub.1-x on axis of easy magnetization perpendicular to the film plane of the layer, a second layer of ternary amorphous magnetic alloy represented by Tb.sub.x (Fe.sub.1-y Co.sub.y).sub.1-x or Dy.sub.x (Fe.sub.1-y Co.sub.y).sub.1-x having and axis of easy magnetization perpendicular to the film plane of the layer, the first and the second layers being formed one on another, light being incident on the side of the first layer, the first and the second layers having magnetic layers exchange-coupled. In the first layer 0.15.ltoreq.x.ltoreq.0.2, and 0<y<0.5. In the second layer 0.2<x.ltoreq.0.35, and 0<y<0.5. At room temperature, the first layer has magnetic dominance of FeCo Sub-lattice, and the second layer has magnetic dominance of Tb or Dy sub-lattice.

REFERENCES:
patent: 4293621 (1981-10-01), Togami
patent: 4556291 (1985-12-01), Chen
patent: 4645722 (1987-02-01), Katayama et al.
patent: 4670356 (1987-06-01), Sato et al.
patent: 4753853 (1988-06-01), Sato et al.
Kobayashi et al, "Magnetization Process of Exchange-Coupled Ferrimagnetic Double Layered Films," Jap. J. of Appl. Phys. vol. 20, No. 11, Nov. 1981 pp. 2089-2095.

Affiliated with

Also associated with

Rating

Optical-thermal magnetic storage 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 Optical-thermal magnetic storage medium, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical-thermal magnetic storage medium will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2190097