发明名称 |
Magnetic disk, method of manufacturing the magnetic disk and method of evaluating the magnetic disk |
摘要 |
A protection layer containing carbon as a major component is deposited by plasma CVD. The protection layer has film quality such that, when a spectrum is obtained by excluding photoluminescence from a Raman spectrum in a wavenumber band from 900 cm<SUP>-1 </SUP>to 1800 cm<SUP>-1 </SUP>obtained by exciting the protection layer with an argon ion laser beam having a wavelength of 514.5 nm and the spectrum is subjected to waveform separation by the Gaussian function to split a D peak appearing around 1350 cm<SUP>-1 </SUP>and a G peak appearing around 1520 cm<SUP>-1</SUP>, the ratio Dw/Gw between a half width Dw of the D peak and a half width Gw of the G peak exceeds 0 and is not greater than 2.7.
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申请公布号 |
US2008268294(A1) |
申请公布日期 |
2008.10.30 |
申请号 |
US20080141593 |
申请日期 |
2008.06.18 |
申请人 |
HOYA MAGNETICS SINGAPORE PTE. LTD. |
发明人 |
ISHIYAMA MASAFUMI;AYAMA KENJI |
分类号 |
G11B5/72;B05D5/12;B32B33/00;C23C14/34;C23C16/26;G11B5/725;G11B5/82;G11B5/84;G11B5/85 |
主分类号 |
G11B5/72 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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