Title:
NANO-HOLE STRUCTURE AND MAGNETIC RECORDING MEDIUM
Document Type and Number:
Japanese Patent JP2009223989
Kind Code:
A
Abstract:
To provide a nano-hole structure and a magnetic recording medium capable of exhibiting soft magnetic characteristics without increasing coercive force due to shape magnetic anisotropy, thereby obtaining a sufficient recording magnetic field.
The nano-hole structure includes a substrate and a nano-hole having a prescribed depth from a surface of the substrate and having a diameter at a bottom side larger than that at the surface side. It is preferable that the nano-hole includes a first region having a first length from the surface of the substrate and a second region at a bottom side from the first region, the second region having a diameter larger than that of the first region and having a second length to the bottom.
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Inventors:
OSHIMA KOKEI
KIKUCHI HIDEYUKI
NAKAO HIROSHI
ITO KENICHI
KIKUCHI HIDEYUKI
NAKAO HIROSHI
ITO KENICHI
Application Number:
JP2008069341A
Publication Date:
October 01, 2009
Filing Date:
March 18, 2008
Export Citation:
Assignee:
FUJITSU LTD
International Classes:
G11B5/65; C25D11/12; C25D11/20; C25D11/24; G11B5/667
Domestic Patent References:
| JP2006075942A | 2006-03-23 | |||
| JPH0329114A | 1991-02-07 | |||
| JPS6419528A | 1989-01-23 |
Attorney, Agent or Firm:
Koichi Hirota
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