Stock material or miscellaneous articles – All metal or with adjacent metals – Composite; i.e. – plural – adjacent – spatially distinct metal...
Patent
1987-02-18
1988-04-26
Rutledge, L. Dewayne
Stock material or miscellaneous articles
All metal or with adjacent metals
Composite; i.e., plural, adjacent, spatially distinct metal...
428641, 428651, 428660, 428661, 428662, 428666, 428678, 428928, C03C 2702
Patent
active
047404302
ABSTRACT:
Certain magnetic alloys are useful for a variety of applications including for magneto-optic memory storage media (optical disks). These magnetic alloys are difficult to protect against composition alteration through such processes as corrosion, oxidation, diffusion, etc. The invention is a multiple-layer structure which protects the magnetic alloys against diffusion as well as corrosion and oxidation without affecting performance of the magnetic alloy in the optical disk. Such magnetic memory storage devices exhibit high bit density and long life. They are erasable and inexpensive and highly advantageous for use in high-bit memory storage devices.
REFERENCES:
patent: 4124736 (1978-11-01), Patel et al.
patent: 4666789 (1987-05-01), Gueugnon et al.
Journal of Applied Physics 57(1), (Apr. 15, 1985), "Magneto-Optics Recording Technology", Mark H. Kryder, pp. 3913-3918.
Optical Data Storage, (Jan. 1983), "Digital Magneto-Optical Recorder", I. Sander et al., DiChen, Editor Proc. SPIE382, p. 240.
Journal of Applied Physics 55 (6), (Mar. 15, 1984), "Aging Phenomena in TbFe Thin Films", P. Bernstein and C. Gueugnon, pp. 1760-1762.
Journal of Applied Physics 59(1), (Jan. 1, 1986), "Thermal Stability of Magneto-Optic Quadrilayers", T. C. Anthony et al., pp. 213-217.
Frankenthal Robert P.
vanDover Robert B.
American Telephone and Telegraph Company AT&T Bell Laboratories
Nilsen Walter G.
Rutledge L. Dewayne
Wyszomierski George
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