Thin protective film for magnetic discs

Author

Andriatis, A.K. ; Il´yashenko, E.I. ; Korneyev, Ju B. ; Ragauskas, Zh A.

Author_Institution

Res. & Dev. Inst. of Comput. Sci., Vilnius, USSR

Volume

24

Issue

6

fYear

1988

fDate

11/1/1988 12:00:00 AM

Firstpage

2653

Lastpage

2654

Abstract

A thin film of hexamethyldisiloxane, C₆H₁₈Si ₂O, is deposited on a magnetic disk to protect its thin-metal-film medium. The comparison of the overcoat is analyzed using electron-spectroscopy chemical analysis (ESCA) and Auger profiling. It is found that upon polymerization, carbon, silicon, and oxygen are uniformly distributed in the film except in the near-surface layer of 3-5-nm thickness, where the carbon content is increased. Despite the differences in protective film thickness the value of the dynamic friction coefficient is practically constant (0.13-0.15), whereas the measured values of the static friction coefficient μ_s vary from 0.16 to 0.75. The value of μ_s and the composition of the film surface layer are well correlated; the lowest value of μ_s corresponds to the highest carbon content in the surface layer

Keywords

Auger effect; chemical analysis; friction; magnetic disc storage; polymer films; protective coatings; thin films; Auger profiling; C₆H₁₈Si₂O; ESCA; dynamic friction coefficient; electron-spectroscopy chemical analysis; hexamethyldisiloxane; magnetic discs; overcoat; polymerization; protective film; static friction coefficient; surface layer composition; thin film; thin-metal-film medium; Chemical analysis; Friction; Magnetic analysis; Magnetic films; Polymer films; Protection; Semiconductor films; Semiconductor thin films; Silicon; Sputtering;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.92202

Filename

92202