Tribological properties of barium ferrite films

Author

Scherge, M. ; Sui, X. ; Ma, X. ; Bauer, C.L. ; Jhon, M.S. ; Kryder, M.H.

Author_Institution

Data Storage Syst. Center, Carnegie Mellon Univ., Pittsburgh, PA, USA

Volume

31

Issue

6

fYear

1995

fDate

11/1/1995 12:00:00 AM

Firstpage

2928

Lastpage

2930

Abstract

Acoustic emission and friction coefficients have been measured during start-stop and continuous sliding for pure and doped barium ferrite films, without lubrication, and compared with concomitant surface topography and magnetic properties. Barium ferrite films averaging about 100 nm in thickness, were produced on thermally oxidized Si substrates by sputter deposition and then furnace or rapid thermal annealed in order to develop optimum microstructure and magnetic characteristics. Four varieties of (hexagonal) barium ferrite were produced and investigated: pure barium ferrite with longitudinal and perpendicular c-axis orientation, pure barium ferrite with perpendicular orientation with Pt underlayer and doped barium ferrite. Results are compared with data obtained from commercial disks with a carbon overcoat

Keywords

acoustic emission; annealing; barium compounds; ferrites; magnetic thin films; rapid thermal annealing; sliding friction; sputtered coatings; BaFe₁₂O₁₉; Pt underlayer; acoustic emission; barium ferrite films; continuous sliding; friction; furnace annealing; longitudinal orientation; magnetic properties; microstructure; perpendicular orientation; rapid thermal annealing; sputter deposition; start-stop; surface topography; thermally oxidized Si substrates; tribological properties; Acoustic emission; Acoustic measurements; Barium; Ferrite films; Friction; Furnaces; Lubrication; Magnetic properties; Sputtering; Surface topography;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.490193

Filename

490193