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Dynamic switching in tilted and conventional perpendicular recording media

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2 Author(s)
Gao, Kai-Zhong ; Center for Magnetic Recording Research, University of California, San Diego, California 92093 ; Bertram, H.Neal

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The single-particle energy surface model is utilized to study the switching field limit and the magnetization ringing in the dynamic reversal process. A simple analysis of magnetization ringing is shown and a method to reduce magnetization ringing in dynamic switching is suggested. We show that for the applied field smaller than the grain anisotropy field, the magnetization ringing is reduced with decreasing applied field magnitude. The energy surface model also predicts that for high data rate magnetic recording, the dynamic switching field may be well below the Stoner–Wohlfarth value. The magnetic write width can be much larger than the physical write pole width in perpendicular magnetic recording systems.

Published in:

Journal of Applied Physics  (Volume:96 ,  Issue: 12 )

Date of Publication:

Dec 2004

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