Title :
Head-Medium Spacing Measurement Using the Read-Back Signal
Author :
Xu, Jianfeng ; Kiely, James D. ; Hsia, Yiao-Tee ; Talke, Frank E.
Author_Institution :
Univ. of California San Diego, La Jolla, CA
Abstract :
This paper presents head-medium spacing measurements for longitudinal recording using the triple harmonic ratio method. The head-medium spacing change is calculated using the readback signal and compared with the slider design flying height at the pole tip. The variation of head-medium spacing using the triple harmonic ratio method is calculated. The stability of the measurement is assessed
Keywords :
disc drives; magnetic disc storage; magnetic heads; magnetic recording; disk drive; head-medium spacing measurement; longitudinal recording; magnetic recording; read-back signal; slider design flying height; triple harmonic ratio method; Disk recording; Fourier transforms; Magnetic heads; Magnetic recording; Oscilloscopes; Signal design; Stability; Testing; USA Councils; Voltage; Disk drive; flying height; head-medium spacing; magnetic recording;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2006.878616
