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Title: Surface modification of magnetic recording heads by plasma immersion ion implantation and deposition

Abstract

Plasma immersion ion implantation and deposition is a novel process for surface modification. By combining plasma deposition and ion implantation and using filtered vacuum arc plasmas, thin film formation, direct and recoil ion implantation, and ion-beam-assisted intermixing of the film and substrate can be accomplished simultaneously. The implications of this technique in tribology of magnetic recording media have been investigated experimentally. Surfaces of Al[sub 2]O[sub 3]-TiC heads were modified with silver, carbon, and titanium ions at doses of 3[times]10[sup 16] ions/cm[sup 2] and mean implantation energies between 2.0 and 4.2 keV. Simulation results indicated that the modified regions exhibited high concentrations of implanted species in the top 2--3 nm, atomically mixed interfaces, and thicknesses between 10 and 25 nm. Surface imaging with an atomic force microscope and nanoindentation testing revealed that the modified heads possessed smoother topographies and increased hardnesses. Contact start-stop and continuous sliding experiments with modified heads and carbon-coated magnetic rigid disks and microscopy observations demonstrated that significant enhancement of the friction and wear characteristics can be achieved with the present surface modification technique. The possible reasons for the improved tribological behavior and the predominant mechanisms during contact start-stop and continuous sliding are interpreted in light of themore » obtained experimental results.« less

Authors:
;  [1]; ; ;  [2]
  1. (Department of Mechanical Engineering, University of California, Berkeley, California 94720 (United States))
  2. (Lawrence Berkeley Laboratory, University of California, Berkeley, California 94720 (United States))
Publication Date:
OSTI Identifier:
7171435
DOE Contract Number:  
AC03-76SF00098
Resource Type:
Journal Article
Journal Name:
Journal of Applied Physics; (United States)
Additional Journal Information:
Journal Volume: 76:3; Journal ID: ISSN 0021-8979
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 36 MATERIALS SCIENCE; MAGNETIC STORAGE DEVICES; SURFACE COATING; RECORDING SYSTEMS; MODIFICATIONS; CARBON; DEPOSITION; HARDNESS; ION IMPLANTATION; PLASMA; SILVER; SPUTTERING; THIN FILMS; TITANIUM; TRIBOLOGY; ELEMENTS; FILMS; MECHANICAL PROPERTIES; MEMORY DEVICES; METALS; NONMETALS; TRANSITION ELEMENTS; 665300* - Interactions Between Beams & Condensed Matter- (1992-); 360601 - Other Materials- Preparation & Manufacture

Citation Formats

Komvopoulos, K., Wei, B., Anders, S., Anders, A., and Brown, I.G. Surface modification of magnetic recording heads by plasma immersion ion implantation and deposition. United States: N. p., 1994. Web. doi:10.1063/1.358516.
Komvopoulos, K., Wei, B., Anders, S., Anders, A., & Brown, I.G. Surface modification of magnetic recording heads by plasma immersion ion implantation and deposition. United States. doi:10.1063/1.358516.
Komvopoulos, K., Wei, B., Anders, S., Anders, A., and Brown, I.G. Mon . "Surface modification of magnetic recording heads by plasma immersion ion implantation and deposition". United States. doi:10.1063/1.358516.
@article{osti_7171435,
title = {Surface modification of magnetic recording heads by plasma immersion ion implantation and deposition},
author = {Komvopoulos, K. and Wei, B. and Anders, S. and Anders, A. and Brown, I.G.},
abstractNote = {Plasma immersion ion implantation and deposition is a novel process for surface modification. By combining plasma deposition and ion implantation and using filtered vacuum arc plasmas, thin film formation, direct and recoil ion implantation, and ion-beam-assisted intermixing of the film and substrate can be accomplished simultaneously. The implications of this technique in tribology of magnetic recording media have been investigated experimentally. Surfaces of Al[sub 2]O[sub 3]-TiC heads were modified with silver, carbon, and titanium ions at doses of 3[times]10[sup 16] ions/cm[sup 2] and mean implantation energies between 2.0 and 4.2 keV. Simulation results indicated that the modified regions exhibited high concentrations of implanted species in the top 2--3 nm, atomically mixed interfaces, and thicknesses between 10 and 25 nm. Surface imaging with an atomic force microscope and nanoindentation testing revealed that the modified heads possessed smoother topographies and increased hardnesses. Contact start-stop and continuous sliding experiments with modified heads and carbon-coated magnetic rigid disks and microscopy observations demonstrated that significant enhancement of the friction and wear characteristics can be achieved with the present surface modification technique. The possible reasons for the improved tribological behavior and the predominant mechanisms during contact start-stop and continuous sliding are interpreted in light of the obtained experimental results.},
doi = {10.1063/1.358516},
journal = {Journal of Applied Physics; (United States)},
issn = {0021-8979},
number = ,
volume = 76:3,
place = {United States},
year = {1994},
month = {8}
}