发明名称 |
Soft magnetic alloy for magnetic recording medium, sputtering target material, and magnetic recording medium |
摘要 |
There is provided a soft magnetic alloy for a perpendicular magnetic recording medium having a low coercive force, high amorphous properties, high corrosion resistance, and a high hardness; and a sputtering target for producing a thin film of the alloy. The alloy comprises in at. %: 6 to 20% in total of one or two of Zr and Hf; 1 to 20% of B; and 0 to 7% in total of one or two or more of Ti, V, Nb, Ta, Cr, Mo, W, Ni, Al, Si, and P; and the balance Co and/or Fe and unavoidable impurities. The alloy further satisfies 6≦2×(Zr%+Hf%)−B%≦16 and 0≦Fe%/(Fe%+Co%)<0.20. |
申请公布号 |
US9208812(B2) |
申请公布日期 |
2015.12.08 |
申请号 |
US201113817645 |
申请日期 |
2011.08.19 |
申请人 |
Sanyo Special Steel Co., Ltd. |
发明人 |
Sawada Toshiyuki;Hasegawa Hiroyuki;Kishida Atsushi |
分类号 |
C22C19/07;C23C14/34;G11B5/65;G11B5/667;G11B5/851 |
主分类号 |
C22C19/07 |
代理机构 |
The Webb Law Firm |
代理人 |
The Webb Law Firm |
主权项 |
1. A soft magnetic alloy for a magnetic recording medium comprising in at. %:
one or two of Zr and Hf: 6 to 20% in total; B: 1 to 20%; and one or two or more of Ti, V, Nb, Ta, Cr, Mo, W, Ni, Al, Si, and P: 0 to 7% in total; and the balance Co and/or Fe and unavoidable impurities, and satisfying formulae below:
6≦2×(Zr%+Hf%)−B%≦16; and0≦Fe%/(Fe%+Co%)<0.20. |
地址 |
Himeji-shi JP |