Thermal and Electron-Stimulated Chemistry of Fomblin-Zdol Lubricant on a Magnetic Disk

Jona Liana Lin, C. S. Bhatia, John T. Yates

研究成果: Article同行評審

45 引文 斯高帕斯(Scopus)


The thermal and electron-induced decomposition of Fomblin-Zdol lubricant on a rigid magnetic disk with a hard carbon overcoat are studied by temperature-programmed reaction/desorption spectroscopy and electron stimulated desorption. The thermal spectroscopy shows two desorption features peaked at 640 and 700 K resulting from decomposition of the Fomblin-Zdol molecules. The threshold temperature for dissociation of the Fomblin-Zdol molecule is at 500–550 K in accordance with the known thermal stability of the free molecule. HF originating from thermal reactions with either surface OH or surface CH groups is a prominent desorption product. Electron impact also causes Fomblin-Zdol dissociation. Two efficient mechanisms for electron impact dissociation have been resolved separately above and below the ionization threshold of ~ 14 eV. The low-energy process is likely due to the formation of negative ions followed by dissociation (dissociative electron attachment) and has a cross section of ~2X 10–16cm. These results show that Fomblin-Zdol as a lubricant on a magnetic disk is inherently unstable thermally and in the presence of triboelectrons.

頁(從 - 到)163-168
期刊Journal of Vacuum Science and Technology A: Vacuum, Surfaces and Films
出版狀態Published - 1995 三月

All Science Journal Classification (ASJC) codes

  • 凝聚態物理學
  • 表面和介面
  • 表面、塗料和薄膜


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