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Correlation of ATI and SNR Decay in Magnetic Recording

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5 Author(s)
Zhupei Shi ; Media Business Unit, HGST,, Western Digital Company,, San Jose,, CA, USA ; Jane Zhang ; Aria Yang ; Shanlin Duan
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We developed a multitrack average amplitude profile method to study adjacent track interference (ATI) in perpendicular magnetic recording. We have integrated a ATI test module into our spin stand. The consequence of demagnetization field on the thermal decay is characterized by signal-to-noise ratio (SNR) decay. The correlation between ATI and SNR decay suggests that the ATI is thermally activated decay.

Published in:

IEEE Transactions on Magnetics  (Volume:48 ,  Issue: 11 )