Magnetic recording medium, method for its production, and system

Details Magnetic recording medium, method for its production, and system Magnetic recording medium, method for its production, and system

1993-01-22

1997-02-25

Kiliman, Leszek

Stock material or miscellaneous articles

Circular sheet or circular blank

Recording medium or carrier

428141, 428336, 428694T, 428694TS, 428694TB, 428694TP, 428694TC, 428694TR, 428694TM, 428900, 427127, 427128, 427129, 427130, 427131, G11B 566

Patent

active

056057334

ABSTRACT:
A thin-film magnetic recording medium improves the magnetostatic and dynamic magnetic characteristics of the conventional magnetic recording media. In one embodiment, the substrate surface is textured in both the circumferential and radial directions. In further embodiments, a variety of underlayers (13) and crystal orientation control layers (17) are provided in accordance with specific parameters to control the crystal structure of the magnetic layer (14). Finally, an embodiment includes multiple magnetic layers (14, 19) having respectively different residual magnetic flux densities and thicknesses, but similar dot products of residual magnetic flux density and thickness.

REFERENCES:
patent: 4326229 (1982-04-01), Yanagisawa
patent: 4506000 (1985-03-01), Kubota et al.
patent: 4652479 (1987-03-01), Suzuki et al.
patent: 4698251 (1987-10-01), Fukuda et al.
patent: 4735840 (1988-04-01), Hedgcoth
patent: 4775576 (1988-10-01), Bouchand et al.
patent: 5326607 (1994-07-01), Muramatsu et al.

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