Multilayered vertical magnetic recording medium

Details Multilayered vertical magnetic recording medium Multilayered vertical magnetic recording medium

1986-04-29

1988-06-07

Lesmes, George F.

Stock material or miscellaneous articles

All metal or with adjacent metals

Composite; i.e., plural, adjacent, spatially distinct metal...

428668, 428694, 428900, 428928, H01F 1016, H01F 1030

Patent

active

047496282

ABSTRACT:
A vertical magnetic recording medium is formed of multiple layers, each layer comprising a cobalt-platinum (CoPt) magnetic film formed on a hexagonal-close-packed (HCP) necleating film. The thickness of each CoPt film in each layer is sufficiently thin to assure that the film has perpendicular magnetic anisotropy. The magnetic properties of the multilayered magnetic film structure can be varied by varying the thickness of the individual films and the number of layers.

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J. A. Aboaf, et al., "Magnetic Properties and Structure of Co-Pt Thin Films," IEEE Trans. on Magnetics, MAG-19 1514 (1983).
M. Kitada, et al., "Magnetic Properties of Sputtered Co-Pt Thin Film," J. Appl. Phys. 54(12), Dec. 1983, pp. 7089-7094.
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