Magnetic recording medium with unit minute recording portions
AssigneeTDK Corporation
InventorYoshimitsu Wada
Life of this patent
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Abstract
In conjunction with a so-called patterned medium including recording tracks each having an array of unit minute recording portions of a magnetic material separated by non-recording portions of a nonmagnetic material, a magnetic head slider is prevented from sticking to the medium. The magnetic recording medium includes recording tracks each having an array of unit minute recording portions of a magnetic material separated by non-recording portions of a nonmagnetic material. The surface height of the unit minute recording portions is set higher than the surface height of the non-recording portions.
Claims13
A magnetic recording medium comprising:
- a substrate;
- recording tracks each having an array of unit minute recording portions of a magnetic material formed on said substrate and separated by non-recording portions of a solid nonmagnetic material also formed on said substrate,
- said unit minute recording portions having a higher surface height than said non-recording portions, such that the surface height of said unit minute recording portions is 5 to 30 nm higher than the surface height of said non-recording portions.
A magnetic recording medium comprising:
- a first layer of a solid non-magnetic material;
- recording tracks each having an array of unit minute recording portions of a magnetic material formed directly on said first layer to be embedded in and surrounded by and thereby separated by said first layer,
- said unit minute recording portions having a higher surface height than said first layer wherein the surface height of said unit minute recording portions is 5 to 30 nm higher than the surface height of said first layer.
Dependencies are inferred from the claim text.