Thermal- and electron-stimulated chemistry of a cyclotriphosphazene lubricant on a magnetic disk with a hard carbon overcoat

Jong-Liang Lin, John T. Yates

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

The thermal and electron induced decomposition of a bis(4-fluorophenoxy)-tetrakis(3-tri-fluoromethylphenoxy)cyclotriphosphazene(code-named X-1P) lubricant on a magnetic disk are studied by temperature-programmed desorption spectroscopy, electron-stimulated desorption, and Auger electron spectroscopy. X-1P decomposes on the surface with a threshold temperature for dissociation at —570 K, —100 K lower than the thermal decomposition temperature of fluid molecules. Electron impact also damages X-1P molecules. Depending on the electron energies, dissociative ionization and dissociative electron attachment are both likely mechanisms for the electron-induced dissociation. The cross section for the dissociative electron attachment by 3 eV electrons is roughly 9X10-18 cm2 both 8 and 25 eV electrons the cross sections are larger.

Original languageEnglish
Pages (from-to)1867-1871
Number of pages5
JournalJournal of Vacuum Science and Technology A: Vacuum, Surfaces and Films
Volume13
Issue number4
DOIs
Publication statusPublished - 1995 Jan 1

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films

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