Thermal sensor for in situ flying height measurements of optical flying heads

Hans H. Gatzen, Norman Muenter, Binghe Ma, Caspar Morsbach

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

The application of flying head technology in optical recording promises a considerable increase in recording density. It may be used for both far field and near field recording. For dynamic in situ flying height and flight attitude measurements, a prototype of a thermal test head has been developed. It takes advantage of the heat transfer in sub-micrometer air bearings as well as its dependence from the air gap width. Such a test head has a slider with a similar air bearing surface as the recording head, but with thermo-resistive sensors that are energized by Joule's heat and embedded at each of the four corners. The paper describes the head design and the fabrication technology and provides first experimental test results as well.

Original languageEnglish
Pages (from-to)594-598
Number of pages5
JournalTribology International
Volume38
Issue number6-7
DOIs
StatePublished - Jun 2005

Keywords

  • Flight attitude measurement
  • Flying head
  • Optical data storage
  • Thermo-resistive sensor

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