Dynamic information storage or retrieval – Storage medium structure
Patent
1997-06-12
1999-02-23
Cao, Allen T.
Dynamic information storage or retrieval
Storage medium structure
369283, G11B 370
Patent
active
058751696
ABSTRACT:
A magneto-optic data storage device includes multiple data storage levels, each storage level including a transparent dielectric seed layer and a partially transmissive recording layer having a multilayer structure including alternating layers of Co/Pt forming a superlattice structure disposed over the seed layer wherein the sputtering pressure for depositing the Co/Pt superlattice recording layer was below 40 mTorr; and wherein the seed layer is formed of ITO and has a thickness between 20 nm to 100 nm and was sputter deposited at a pressure of greater than 8 mTorr and less than or equal to 20 mTorr so that the superlattice recording layer has a high coercivity and high Kerr rotation and wherein the superlattice recording layer has a thickness of from between 2 to 20 nm.
REFERENCES:
patent: 4450553 (1984-05-01), Holster et al.
patent: 5202875 (1993-04-01), Rosen et al.
patent: 5255262 (1993-10-01), Best et al.
patent: 5305300 (1994-04-01), Ohta et al.
patent: 5381401 (1995-01-01), Best et al.
patent: 5449566 (1995-09-01), Fujii et al.
patent: 5612109 (1997-03-01), Tyan et al.
"Multilevel Volumetric Optical Storage", by Rubin et al SPIE vol. 2338
"Effect of Sputter-Deposition Processes on the Microstructure and Magnetic Properties of Pt/Co Multilayers", by Carcia et al J. Mag. Magn. Mat. 121(1993) pp. 452-460.
"Co/Pt and Co/Pd Multilayers as Magneto-Optical Recording Materials", by Hashimoto et al J. Mag. Magn. Mat. 88(1990) pp. 211-226.
"Hysteresis, Microstructure, and Magneto-Optical Recording in Co/Pt and Co/Pd Multilayers", Zeper et al J. Appl. Phys. 70(1991) pp. 2264-2271.
"Co/Pt and Co/Pd Ultrathin Multilayered Films as New Magneto-Optical Recording Materials", by Ochiai et al IEEE Trans. MAG 25 (1989) pp. 3755-3757.
Cao Allen T.
Eastman Kodak Company
Owens Raymond L.
LandOfFree
Magneto-optic data storage device having multiple data storage l 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-optic data storage device having multiple data storage l, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magneto-optic data storage device having multiple data storage l will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-313044