Title:
THERMALLY ASSISTED MAGNETIC RECORDING MEDIUM AND MAGNETIC STORAGE DEVICE
Document Type and Number:
WIPO Patent Application WO/2011/096472
Kind Code:
A1
Abstract:
Disclosed is a thermally assisted magnetic recording medium comprising a substrate, a plurality of undercoat layers formed on the substrate, and a magnetic layer which comprises, as the main component, an alloy having an L10 structure, wherein at least one of the undercoat layers comprises MgO as a main component and contains at least one oxide selected from among SiO2, TiO2, Cr2O3, Al2O3, Ta2O5, ZrO2, Y2O3, CeO2, MnO, TiO, and ZnO. The thermally assisted recording medium has such properties that the magnetic grains have an exceedingly small diameter, the exchange coupling among the magnetic grains is sufficiently weak, and the dispersion of coercive force is low.
Inventors:
KANBE TETSUYA (JP)
HASHIMOTO ATSUSHI (JP)
FUKUSHIMA TAKAYUKI (JP)
HASHIMOTO ATSUSHI (JP)
FUKUSHIMA TAKAYUKI (JP)
Application Number:
PCT/JP2011/052238
Publication Date:
August 11, 2011
Filing Date:
February 03, 2011
Export Citation:
Assignee:
SHOWA DENKO KK (JP)
KANBE TETSUYA (JP)
HASHIMOTO ATSUSHI (JP)
FUKUSHIMA TAKAYUKI (JP)
KANBE TETSUYA (JP)
HASHIMOTO ATSUSHI (JP)
FUKUSHIMA TAKAYUKI (JP)
International Classes:
G11B5/738; G11B5/02; G11B5/64; G11B5/65
Foreign References:
| JP2009158054A | 2009-07-16 | |||
| JP2001351226A | 2001-12-21 | |||
| JP2001134928A | 2001-05-18 | |||
| JP2006236486A | 2006-09-07 |
Attorney, Agent or Firm:
UCHIDA, YUKIO (JP)
Yukio Uchida (JP)
Yukio Uchida (JP)
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Claims: