Nanoscale protection for CoCrPT thin film magnetic recording media

J. Zhang, Y. F. Xu, J. P. Wang, C. K. Pock, R. Ji, T. C. Chong

Research output: Contribution to journalConference articlepeer-review

10 Scopus citations


In this study, CrMn, CoCrPt-C multilayers and carbon overcoat were sequentially deposited on the NiAl coated glass substrate as underlayer, granular media layer, and protect layer by DC sputtering. Samples with various interlayer carbon concentration and top-layer carbon were tested for corrosion resistance in the 0.5 N HCl saturated vapor environment. The results show that surface concentration of cobalt and nickel varies with the carbon content in the magnetic layer. An nonannealed top-layer carbon and low temperature annealed interlayer carbon can provide grain-sized or nanoscale protection to the CoCrPt magnetic media. Carbon concentration within/above the top of CoCrPt-C granular thin film plays an important roles in the suppression of corrosion.

Original languageEnglish (US)
Pages (from-to)1849-1851
Number of pages3
JournalIEEE Transactions on Magnetics
Issue number4 I
StatePublished - Jul 2001
Event8th Joint Magnetism and Magnetic Materials -International Magnetic Conference- (MMM-Intermag) - San Antonio, TX, United States
Duration: Jan 7 2001Jan 11 2001


  • Corrosion
  • Granular
  • Nanoscale protection and thin film


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