Two-Dimensional Flying-Height Modulation Mapping at HDD Drive Level

Yuki Shimizu, Junguo Xu

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)


A measurement system for flying-height modulation of magnetic heads is proposed, and two-dimensional (2-D) flying-height modulation mapping is demonstrated at the drive level. The measurement system is based on the triple harmonic method, which uses a readback signal from the read element of the magnetic head. This technique, which maintains a constant wavelength of the pattern for fly-height modulation measurement, was proposed to achieve 2-D flying-height modulation mapping. Moreover, the frequency response of the measurement system was calibrated, and measurement accuracy was improved.

Original languageEnglish
Pages (from-to)2516-2518
Number of pages3
JournalIEEE Transactions on Magnetics
Issue number10
Publication statusPublished - 2006 Oct
Externally publishedYes


  • Flying height
  • head-disk interface (HDI)
  • magnetic recording
  • measurement

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering


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