Title:
Co-Fe ALLOY FOR SOFT MAGNETIC FILMS, SOFT MAGNETIC FILM, AND PERPENDICULAR MAGNETIC RECORDING MEDIUM
Document Type and Number:
WIPO Patent Application WO/2010/053048
Kind Code:
A1
Abstract:
Disclosed is a Co-Fe alloy for soft magnetic films used in perpendicular magnetic recording media, etc., which maintains high soft magnetic properties and has excellent weather resistance. Disclosed is a Co-Fe alloy for soft magnetic films, which is a Co-Fe alloy the composition formula of which is expressed at atomic ratio as ((Co100–X–FeX)100–Y–NiY)100–(a + b + c)–M1a–M2b–Tic, where 5 ≦ X ≦ 80, 0 ≦ Y ≦ 25, 2 ≦ a ≦ 6, 2 ≦ b ≦ 10, and 0.5 ≦ c ≦ 10, the remainder of which is composed of unavoidable impurities, and wherein the element M1 in the aforementioned composition formula is one or two or more elements selected from (Zr, Hf, Y), and the element M2 in the aforementioned composition formula is one or two or more elements selected from (Ta, Nb).
Inventors:
UENO Tomonori (HITACHI METALSLTD.,2107-2,Yasugi-cho,Yasugi-sh, Shimane 01, 〒6928601, JP)
上野 友典 (〒01 島根県安来市安来町２１０７番地２ 日立金属株式会社 冶金研究所内 Shimane, 〒6928601, JP)
FUKUOKA Jun (HITACHI METALSLTD.,2107-2,Yasugi-cho,Yasugi-sh, Shimane 01, 〒6928601, JP)
福岡 淳 (〒01 島根県安来市安来町２１０７番地２ 日立金属株式会社 冶金研究所内 Shimane, 〒6928601, JP)
上野 友典 (〒01 島根県安来市安来町２１０７番地２ 日立金属株式会社 冶金研究所内 Shimane, 〒6928601, JP)
FUKUOKA Jun (HITACHI METALSLTD.,2107-2,Yasugi-cho,Yasugi-sh, Shimane 01, 〒6928601, JP)
福岡 淳 (〒01 島根県安来市安来町２１０７番地２ 日立金属株式会社 冶金研究所内 Shimane, 〒6928601, JP)
Application Number:
JP2009/068652
Publication Date:
May 14, 2010
Filing Date:
October 30, 2009
Export Citation:
Assignee:
HITACHI METALS,LTD. (2-1Shibaura 1-chome, Minato-ku Tokyo, 14, 〒1058614, JP)
日立金属株式会社 (〒14 東京都港区芝浦一丁目２番１号 Tokyo, 〒1058614, JP)
UENO Tomonori (HITACHI METALSLTD.,2107-2,Yasugi-cho,Yasugi-sh, Shimane 01, 〒6928601, JP)
上野 友典 (〒01 島根県安来市安来町２１０７番地２ 日立金属株式会社 冶金研究所内 Shimane, 〒6928601, JP)
FUKUOKA Jun (HITACHI METALSLTD.,2107-2,Yasugi-cho,Yasugi-sh, Shimane 01, 〒6928601, JP)
日立金属株式会社 (〒14 東京都港区芝浦一丁目２番１号 Tokyo, 〒1058614, JP)
UENO Tomonori (HITACHI METALSLTD.,2107-2,Yasugi-cho,Yasugi-sh, Shimane 01, 〒6928601, JP)
上野 友典 (〒01 島根県安来市安来町２１０７番地２ 日立金属株式会社 冶金研究所内 Shimane, 〒6928601, JP)
FUKUOKA Jun (HITACHI METALSLTD.,2107-2,Yasugi-cho,Yasugi-sh, Shimane 01, 〒6928601, JP)
International Classes:
C22C19/07; C22C38/00; C23C14/34; G11B5/738; H01F10/16; H01F41/18
Download PDF: