Micromagnetics of Percolated Perpendicular Media

Author

Zhu, Jian-Gang ; Tang, Yuhui

Author_Institution

Data Storage Syst. Center, Carnegie Mellon Univ., Pittsburgh, PA

Volume

43

Issue

2

fYear

2007

Firstpage

687

Lastpage

692

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;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2006.888235

Filename

4069092