发明名称 |
Dual-layer carbon-based protective overcoats for recording media by filtered cathodic ARC deposition |
摘要 |
A recording medium, comprising: (a) a substrate having at least one surface; (b) a stacked plurality of thin film layers on the at least one surface and including at least one magnetic or magneto-optical (MO) recording layer; and (c) a protective overcoat layer on an outer surface of an outermost layer of the layer stack, comprising: (i) a first sub-layer layer (c<SUB>1</SUB>) of undoped tetrahedral amorphous carbon (ta-C) formed by filtered cathodic arc deposition (FCAD) on the outer surface of the outermost layer of the stacked plurality of thin film layers and having a high mass density of carbon (C) atoms greater than about 2.5 gms/cm<SUP>3</SUP>; and (ii) a second sub-layer (c<SUB>2</SUB>) of nitrogen-doped tetrahedral amorphous carbon (ta-C:N) formed by FCAD on the undoped ta-C layer and having a high mass density of carbon (C) atoms greater than about 2.0 gms/cm<SUP>3</SUP>.
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申请公布号 |
US2005181238(A1) |
申请公布日期 |
2005.08.18 |
申请号 |
US20040776191 |
申请日期 |
2004.02.12 |
申请人 |
SEAGATE TECHNOLOGY LLC |
发明人 |
MA XIAODING;STIRNIMAN MICHAEL J.;GUI JING |
分类号 |
C23C14/06;G11B5/72;G11B5/84;(IPC1-7):C23C16/00;G11B5/64 |
主分类号 |
C23C14/06 |
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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