Title:
COFE SYSTEM ALLOY FOR SOFT MAGNETIC FILM LAYERS IN PERPENDICULAR MAGNETIC RECORDING MEDIA, AND SPUTTERING TARGET MATERIAL
Document Type and Number:
WIPO Patent Application WO/2014/126143
Kind Code:
A1
Abstract:
Provided are: a CoFe system alloy for soft magnetic thin film layers in perpendicular magnetic recording media; and a sputtering target material. This alloy is an alloy for soft magnetic film layers in perpendicular magnetic recording media, and is formed of one or more elements selected from among Ge, Ru, Rh, Pd, Re, Os, Ir and Pt, and one or more elements selected from among Sc, Y, lanthanoids (atomic numbers 57-71), Ti, Zr, Hf, V, Nb, Ta, Mo, W and B, with the balance made up of Co, Fe and unavoidable impurities. This alloy satisfies, in atom%, all of the following formulae (a)-(d): (a) 0.1% ≤ TCR ≤ 10%; (b) 5% ≤ TAM ≤ 25%; (c) 13% ≤ TCR/2 + TAM + TNM ≤ 25%; and (d) 0 ≤ Fe%/(Fe% + Co%) ≤ 0.80.
Inventors:
SAWADA TOSHIYUKI (JP)
Application Number:
PCT/JP2014/053312
Publication Date:
August 21, 2014
Filing Date:
February 13, 2014
Export Citation:
Assignee:
SANYO SPECIAL STEEL CO LTD (JP)
International Classes:
C22C45/04; C22C45/02; C23C14/34; G11B5/667; G11B5/851
Foreign References:
| JP2012169021A | 2012-09-06 | |||
| JP2001312815A | 2001-11-09 | |||
| JPS59182938A | 1984-10-17 | |||
| JPH0877544A | 1996-03-22 | |||
| JPS58164747A | 1983-09-29 | |||
| JPS5990219A | 1984-05-24 |
Attorney, Agent or Firm:
KATSUNUMA Hirohito et al. (JP)
Katsunuma Hirohito (JP)
Katsunuma Hirohito (JP)
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