NONLINEARITIES IN THIN-FILM MEDIA AND THEIR IMPACT ON DATA RECOVERY

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As linear density increases, the readback waveform becomes significantly different from that constructed from linear superposition of the isolated transition response. This discrepancy arises as nearby transitions interact with each other at high linear densities. Nonlinearities cause significant reduction in the available signal energy as well as distortion in the signal waveform. The loss in signal energy in turn limits the capability of any signal detection scheme. In this paper, we investigate nonlinearities in thin-film media using simulated transitions created from micromagnetic computer modeling, and study the impact of such media nonlinearities on the performance of two competing modulation codes: the rate 8/9 (0,k) code and the rate 2/3 (1,7) code.
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Issue Date
1993-01
Language
English
Article Type
Article; Proceedings Paper
Citation

IEEE TRANSACTIONS ON MAGNETICS, v.29, no.1, pp.177 - 182

ISSN
0018-9464
DOI
10.1109/20.195566
URI
http://hdl.handle.net/10203/66038
Appears in Collection
EE-Journal Papers(저널논문)
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