Co alloy target and its production method, soft magnetic film for perpendicular magnetic recording and perpendicular magnetic recording medium
US7381282B2 · kind B2 · utility
1Cited by
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5Claims
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Key dates
| Filing date | Apr 5, 2005 |
| Grant date | Jun 3, 2008 |
| Priority date | — |
| Expiry date | Oct 5, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F10/132
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A Co alloy target comprising 1 to 10 atomic % of Zr and 1 to 10 atomic % of Nb and/or Ta, the balance being unavoidable impurities and Co, is produced by rapidly solidifying a melt of the Co alloy to produce an alloy powder, classifying the alloy powder to maximum particle size of 500 μm or less, and pressure-sintering the classified alloy powder.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.