Title:
The CoFe system alloy for soft magnetism membrane layers and sputtering target material in a vertical magnetic memory medium
Document Type and Number:
Japanese Patent JP6116928
Kind Code:
B2
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:
Toshiyuki Sawada
Application Number:
JP2013028726A
Publication Date:
April 19, 2017
Filing Date:
February 18, 2013
Export Citation:
Assignee:
Sanyo Special Steel Co., Ltd.
International Classes:
C22C45/04; C22C45/02; C23C14/34; G11B5/667; G11B5/851
Domestic Patent References:
| JP2012169021A | ||||
| JP2001049425A | ||||
| JP2013161497A | ||||
| JP2010150591A |
Foreign References:
| WO2015166762A1 |
Attorney, Agent or Firm:
Shiina Akira