REDUCED ADJACENT TRACK ERRORS IN BIT-PATTERNED MEDIA

REDUCED ADJACENT TRACK ERRORS IN BIT-PATTERNED MEDIA

PROBLEM TO BE SOLVED: To provide techniques for reducing adjacent track errors in bit-patterned media.SOLUTION: The present disclosure relates to a magnetic medium that includes a substrate and a bit patterned magnetic layer applied to the substrate. The bit-patterned magnetic layer includes islands...

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Hauptverfasser: RUBIN KURT A, DAN S KERCHER, MICHAEL GLOBIS
Format: Patent
Sprache:eng
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INFORMATION STORAGE
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER
PHYSICS
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creator RUBIN KURT A
DAN S KERCHER
MICHAEL GLOBIS
description PROBLEM TO BE SOLVED: To provide techniques for reducing adjacent track errors in bit-patterned media.SOLUTION: The present disclosure relates to a magnetic medium that includes a substrate and a bit patterned magnetic layer applied to the substrate. The bit-patterned magnetic layer includes islands, and each island includes a first magnetic material that has a first magnetic anisotropy and that has a top surface, a bottom surface, and a peripheral surface. Each island also includes a second magnetic material covering the peripheral surface of the first magnetic material and having a second magnetic anisotropy that is higher than the first magnetic anisotropy. In one embodiment, the first magnetic material may comprise a nucleation domain in a centrally located surface portion of the magnetic islands, and/or the second magnetic material may comprise an outer shell on the peripheral surface of the islands.
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subjects INFORMATION STORAGE
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER
PHYSICS
title REDUCED ADJACENT TRACK ERRORS IN BIT-PATTERNED MEDIA
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