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Surface modification of magnetic recording media by filtered cathodic vacuum arc

J. Appl. Phys. 106, 093504 (2009); doi:10.1063/1.3245399

Published 5 November 2009

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H.-S. Zhang and K. Komvopoulos
Department of Mechanical Engineering, University of California, Berkeley, California 94720, USA
Surface modification of a magnetic recording medium was accomplished by filtered cathodic vacuum arc (FCVA). The carbon overcoat of thin-film disks was removed by Ar+ ion sputter etching in vacuum to prevent oxidation of the exposed magnetic medium, which was then modified by FCVA carbon plasma under conditions of zero and −100 V pulsed substrate bias. Monte Carlo simulations performed with the T-DYN code, x-ray photoelectron spectroscopy (XPS), atomic force microscopy (AFM), and surface force microscopy (SFM) provided insight into carbon implantation profiles, surface chemical composition, roughness, and nanomechanical properties of the surface-treated magnetic medium. The dependence of surface modification on the FCVA treatment conditions is discussed in the context of T-DYN, XPS, AFM, and SFM results. The findings of this study demonstrate the potential of FCVA to provide overcoat-free magnetic recording media exhibiting oxidation resistance and enhanced nanomechanical properties. ©2009 American Institute of Physics
History: Received 24 May 2009; accepted 17 September 2009; published 5 November 2009
Permalink: http://link.aip.org/link/?JAPIAU/106/093504/1
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KEYWORDS and PACS

Keywords
PACS
  • 85.70.Li
    Other magnetic recording and storage devices
  • 81.05.Bx
    Metals, semimetals, and alloys: fabrication, treatment, testing and analysis
  • 52.77.Bn
    Etching and cleaning in plasmas
  • 68.35.Gy
    Mechanical properties and surface strains of solid surfaces and interfaces
  • 75.50.Ss
    Magnetic recording materials
  • 68.55.Ln
    Thin film defects and impurities
  • YEAR: 2009

PUBLICATION DATA

ISSN:
0021-8979 (print)   1089-7550 (online)
Publisher:
AIP is a member of CrossRef AIP

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