Title:
THERMALLY ASSISTED MAGNETIC RECORDING MEDIUM AND MAGNETIC RECORDING DEVICE
Document Type and Number:
WIPO Patent Application WO/2011/027880
Kind Code:
A1
Abstract:
Disclosed is a thermally assisted magnetic recording medium having a surface recording density of not less than 1 Tbit/inch2, wherein a magnetic layer can be heated to a temperature not less than 200°C even with weak heating power and the cooling rate after the heating is sufficiently high. Specifically disclosed is a thermally assisted magnetic recording medium, wherein a magnetic layer (108) that is mainly composed of an FePt alloy or CoPt alloy having an L10 structure is formed on a substrate (101) with a base layer interposed therebetween, and the magnetic layer (108) is formed on a multilayer film (107) in which compression stress introduction layers (103a, 104a, 105a, 106a) that have a BCC structure and are formed from a metal or alloy having a lattice constant of not more than 2.97 Å and a plurality of MgO layers (103b, 104b, 105b, 106b) are alternately arranged.
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Inventors:
KANBE TETSUYA (JP)
SASAKI YUZO (JP)
HASHIMOTO ATSUSHI (JP)
SASAKI YUZO (JP)
HASHIMOTO ATSUSHI (JP)
Application Number:
PCT/JP2010/065207
Publication Date:
March 10, 2011
Filing Date:
September 06, 2010
Export Citation:
Assignee:
SHOWA DENKO KK (JP)
KANBE TETSUYA (JP)
SASAKI YUZO (JP)
HASHIMOTO ATSUSHI (JP)
KANBE TETSUYA (JP)
SASAKI YUZO (JP)
HASHIMOTO ATSUSHI (JP)
International Classes:
G11B5/738; G11B5/02; G11B5/64
Domestic Patent References:
| WO2008030199A1 | 2008-03-13 |
Foreign References:
| JP2009158054A | 2009-07-16 | |||
| JP2001189010A | 2001-07-10 |
Attorney, Agent or Firm:
SHIGA Masatake et al. (JP)
Masatake Shiga (JP)
Masatake Shiga (JP)
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