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Title:
MAGNETIC RECORDING MEDIUM, ITS MANUFACTURING METHOD, AND MANUFACTURING APPARATUS
Document Type and Number:
Japanese Patent JP2005293621
Kind Code:
A
Abstract:

To provide a magnetic recording medium of a metal magnetic thin film type which has high coercive force and in which high reproduction output and C/N are obtained in short wavelength recording.

This medium is a magnetic recording medium having a metal thin film magnetic layer 2 on a non-magnetic support 1, the metal thin film magnetic layer 2 consists of an initial growth part 2a on the support 1 plane and a latter period growth part 2b on the initial growth part 2a, the initial growth part 2a is a part in which crystal particles constituting the metal thin film magnetic layer 2 are grown almost linearly in the almost vertical direction for the support 1, the latter period growth part 2c is a part in which the crystal particles are grown in a semi-circle arc type in the direction of the prescribed tilt angle for the support 1. The manufacturing apparatus is provided with an evaporation-material/oxygen mixing chamber in which the supporter side is opened and an oxygen gas supply opening is provided inside, in the vicinity of a vapor deposition start point.


Inventors:
NAKAYAMA MASAO
UEDA KOJI
KANAZAWA HIROMICHI
TANABE YOSHIHIKO
Application Number:
JP2004102476A
Publication Date:
October 20, 2005
Filing Date:
March 31, 2004
Export Citation:
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Assignee:
TDK CORP
International Classes:
G11B5/65; G11B5/85; H01F10/16; H01F41/20; (IPC1-7): G11B5/65; G11B5/85; H01F10/16; H01F41/20
Attorney, Agent or Firm:
Masahiro Okada