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Title:
MAGNETIC RECORDING MEDIUM AND ITS MANUFACTURING METHOD
Document Type and Number:
Japanese Patent JP2005322384
Kind Code:
A
Abstract:

To increase a recording capacity by heightening density of particles of a magnetic layer of a magnetic recording medium.

A method for manufacturing the magnetic recording medium includes the steps of sputtering at least an underlayer over a substrate layer, where the underlayer is comprised of a Cr-based alloy, and sputtering at least an interlayer over the underlayer, where the interlayer is comprised of a Co-based alloy. The method further includes a step of sputtering at least a overlayer over the interlayer, where the overlayer is comprised of a Co-based alloy. At least one of the underlayer, the interlayer and the overlayer are doped with X, where X is a metal with an oxidation potential of less than -0.6 eV. At least one of the underlayer, the interlayer and the overlayer are reactively sputtered in the presence of oxygen.


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Inventors:
CHENG YUANDA R
KENNEDY STEVEN ROGER
MICHAEL GENE RACINE
Application Number:
JP2005074426A
Publication Date:
November 17, 2005
Filing Date:
March 16, 2005
Export Citation:
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Assignee:
HERAEUS INC
International Classes:
G11B5/65; B05D5/12; C23C14/06; G11B5/62; G11B5/64; G11B5/66; G11B5/725; G11B5/73; G11B5/738; G11B5/851; G11B5/84; (IPC1-7): G11B5/65; G11B5/725; G11B5/738; G11B5/851
Attorney, Agent or Firm:
Tomijio Sasashima
Haruyuki Nishiyama
Moriaki Ogawa