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Title:
MANUFACTURING METHOD FOR MAGNETIC RECORDING MEDIUM AND MAGNETIC RECORDING MEDIUM MANUFACTURED BY SAID MANUFACTURING METHOD
Document Type and Number:
WIPO Patent Application WO/2017/002316
Kind Code:
A1
Abstract:
The present invention is a method that allows for mass production of a magnetic recording medium with the component composition thereof monotonically changing along the film thickness direction. This method is for manufacturing a magnetic recording medium that includes at least a substrate and a magnetic recording layer, the magnetic recording layer containing Fe, Pt, and Rh with the Rh composition changing along the film thickness direction of the magnetic recording layer. The method for manufacturing the magnetic recording medium includes: laminating a second magnetic layer of FePtRh on a first magnetic layer of FePt or FePtRh, and then heating the substrate after the deposition of the first magnetic layer and the second magnetic layer; or depositing the first magnetic layer and the second magnetic layer on the substrate preheated to a predetermined temperature. In the method for manufacturing the magnetic recording medium, when laminating the second magnetic layer of FePtRh onto the first magnetic layer of FePtRh, the concentration of Rh in the second magnetic layer is higher than that of the first magnetic layer.

Inventors:
KIKUCHI, Hiroto (1-1, Tanabeshinden, Kawasaki-ku, Kawasaki-sh, Kanagawa 30, 〒2109530, JP)
SHIMATSU, Takehito (2-1-1 Katahira, Aoba-ku, Sendai-sh, Miyagi 77, 〒9808577, JP)
Application Number:
JP2016/002901
Publication Date:
January 05, 2017
Filing Date:
June 15, 2016
Export Citation:
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Assignee:
FUJI ELECTRIC CO., LTD. (1-1 Tanabeshinden, Kawasaki-ku Kawasaki-sh, Kanagawa 30, 〒2109530, JP)
TOHOKU UNIVERSITY (2-1-1, Katahira Aoba-ku, Sendai-sh, Miyagi 77, 〒9808577, JP)
International Classes:
G11B5/84; G11B5/64; G11B5/66
Foreign References:
JP2009151899A2009-07-09
JP2006073193A2006-03-16
JPH08221744A1996-08-30
JP2003101202A2003-04-04
JP2005129788A2005-05-19
JP2013239618A2013-11-28
Attorney, Agent or Firm:
TANI & ABE, P.C. (6-20, Akasaka 2-chome Minato-k, Tokyo 52, 〒1070052, JP)
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