DocumentCode
1306124
Title
Submillisecond spin-stand measurements of thermal decay in magnetic recordings
Author
Dhagat, P. ; Jander, A. ; Indeck, R.S. ; Muller, M.W. ; Richter, H.J.
Author_Institution
Dept. of Electr. Eng., Washington Univ., St. Louis, MO, USA
Volume
36
Issue
2
fYear
2000
fDate
3/1/2000 12:00:00 AM
Firstpage
528
Lastpage
531
Abstract
The time dependence of magnetic recordings is determined on a spin stand by observing the amplitude of different spectral components of the readback signal from about 200 μs to 11 s after writing. Measurement times shorter than one revolution period of the disk are obtained by placing separate write and read heads on the same track. An increased decay rate in the fundamental signal amplitude is observed at higher linear recording densities. The decay deviates from ln (t) at short times. Comparison of the decay rates of the spectral components of different density recordings indicates transition broadening over time
Keywords
magnetic heads; magnetic recording; magnetic recordings; read heads; readback signal; spectral components; submillisecond spin-stand measurements; thermal decay; transition broadening over time; write heads; Delay; Disk recording; Helium; Magnetic flux; Magnetic heads; Magnetic recording; Magnetic separation; Oscilloscopes; Viscosity; Writing;
fLanguage
English
Journal_Title
Magnetics, IEEE Transactions on
Publisher
ieee
ISSN
0018-9464
Type
jour
DOI
10.1109/20.825833
Filename
825833
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