Title :
Micromagnetics of Percolated Perpendicular Media
Author :
Zhu, Jian-Gang ; Tang, Yuhui
Author_Institution :
Data Storage Syst. Center, Carnegie Mellon Univ., Pittsburgh, PA
Abstract :
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
Keywords :
granular materials; magnetic thin films; micromagnetics; perpendicular magnetic recording; thermal stability; densely distributed nonmagnetic pinning sites; exchange coupled small-size magnetic grains; film microstructure; magnetic properties; magnetic stability; micromagnetics; percolated perpendicular media; thermal magnetic stability; Couplings; Magnetic analysis; Magnetic films; Magnetic properties; Micromagnetics; Microstructure; Performance analysis; Perpendicular magnetic recording; Stability analysis; Thermal stability; Granular perpendicular media; high density recording; percolated perpendicular media (PPM); superparamagnetism; thermal stability;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2006.888235
