DocumentCode
2823586
Title
Flyability and flying height modulation measurement of sliders with sub-10 nm flying heights
Author
Zeng, Q.H. ; Thornton, B.H. ; Bogy, D.B. ; Bhatia, C.S.
Author_Institution
IBM Almaden Res. Center, San Jose, CA, USA
fYear
2000
fDate
6-8 Nov. 2000
Abstract
An experimental system is set up, and a procedure is proposed for measuring the flying height modulation (FHM) at the head-disk interface of a magnetic disk drive by using laser Doppler vibrometry (LDV). A precision trigger, a large number of averages, and a suitable filter are key to successfully measuring the FHM. Better results can be obtained from the velocity output of the LDV as opposed to the displacement output.
Keywords
Doppler measurement; height measurement; magnetic disc storage; magnetic heads; measurement by laser beam; flyability; flying height modulation measurement; head-disk interface; laser Doppler vibrometry; magnetic disk drive; slider; Acoustic signal detection; Drives; Frequency domain analysis; Laboratories; Laser beams; Loss measurement; Mechanical engineering; Oscilloscopes; Position measurement; Stability;
fLanguage
English
Publisher
ieee
Conference_Titel
Asia-Pacific Magnetic Recording Conference, 2000. APMRC 2000
Conference_Location
Tokyo, Japan
Print_ISBN
0-7803-6254-3
Type
conf
DOI
10.1109/APMRC.2000.898923
Filename
898923
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