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Sputtered carbon overcoat in a thin-film medium and sputtering method

  • US 5,679,431 A
  • Filed: 04/01/1994
  • Issued: 10/21/1997
  • Est. Priority Date: 10/08/1993
  • Status: Expired due to Term
First Claim
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1. In a thin-film medium having a substrate, a magnetic thin-film layer, and a sputtered, nitrogen-containing, wear-resistant overcoat on the layer, an improvement comprising:

  • (a) a sputtered, non-magnetic, substantially nitrogen-free sublayer disposed between said overcoat and said magnetic layer and having a thickness between 25-100 Å

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