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Micromagnetics of Percolated Perpendicular Media

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2 Author(s)
Zhu, Jian-Gang ; Data Storage Syst. Center, Carnegie Mellon Univ., Pittsburgh, PA ; Yuhui Tang

In this paper, we present a systematic micromagnetic analysis on the magnetic properties, thermal magnetic stability, and recording performance of percolated perpendicular media (PPM), a novel film microstructure of exchange coupled small-size magnetic grains with densely distributed nonmagnetic pinning sites. The analysis shows that the PPM microstructure can substantially reduce medium noise over the conventional granular perpendicular media while maintaining sufficient magnetic stability

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Magnetics, IEEE Transactions on  (Volume:43 ,  Issue: 2 )