Title:
SEED LAYER ALLOY FOR MAGNETIC RECORDING MEDIUM
Document Type and Number:
WIPO Patent Application WO/2020/255908
Kind Code:
A1
Abstract:
In order to address the issue of providing a seed layer alloy that can obtain a large-capacity magnetic recording medium having excellent corrosion resistance, this seed layer alloy for a magnetic recording medium includes: at least at least one type selected from the group consisting of Ni, Fe, and Co; at least one type of element M1 selected from the group consisting of W, Mo, Ta, Cr, V, and Nb; at least one type of element M2 selected from the group consisting of Au, Ag, Pd, Rh, Ir, Ru, Re, and Pt; and unavoidable impurities. The element M1 content is 2–13 at.%, the element M2 content is 2–13 at.%, and the sum of the element M1 content and the element M2 content is 4–15 at.%. When the Ni, Fe, and Co content ratio (at.%) Ni:Fe:Co in the alloy is X:Y:Z, X is 20–100, Y is 0–50, and Z is 0–60.
Inventors:
IMOTO MIYUKI (JP)
MATSUBARA NORIAKI (JP)
MATSUBARA NORIAKI (JP)
Application Number:
PCT/JP2020/023348
Publication Date:
December 24, 2020
Filing Date:
June 15, 2020
Export Citation:
Assignee:
SANYO SPECIAL STEEL CO LTD (JP)
International Classes:
B22F3/00; C22C19/03; C22C19/05; C22C19/07; C22C30/00; G11B5/738; G11B5/84
Domestic Patent References:
| WO2017179466A1 | 2017-10-19 |
Foreign References:
| JP2017130242A | 2017-07-27 | |||
| JP2005174531A | 2005-06-30 | |||
| JP2007004858A | 2007-01-11 |
Attorney, Agent or Firm:
NAKAMURA Yukitaka et al. (JP)
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