Thermal stability of recorded information at high densities

Author

Charap, S.H. ; Lu, Pu-Ling ; He, Yanjun

Author_Institution

DSSC, Carnegie Mellon Univ., Pittsburgh, PA, USA

Volume

33

Issue

1

fYear

1997

fDate

1/1/1997 12:00:00 AM

Firstpage

978

Lastpage

983

Abstract

Simulations have been carried out with the purpose of identifying the thermal stability limits on data storage density in longitudinal recording on thin film media. The simulations use a combination of molecular dynamics based upon the Landau-Lifshitz-Gilbert equation of motion and a Monte Carlo method for dealing with magnetic viscosity. Based upon the limits on media coercivity imposed by available heads and SNR considerations, but assuming that sufficient head resolution can be achieved, an upper bound of about 36 Gbit/in.² is projected

Keywords

Monte Carlo methods; coercive force; digital magnetic recording; hard discs; magnetic aftereffect; thermal stability; Landau-Lifshitz-Gilbert equation; Monte Carlo method; data storage density; head resolution; high density recording; longitudinal recording; magnetic viscosity; media coercivity limits; molecular dynamics; recorded information stability; rigid disks; thermal stability; thin film media; Anisotropic magnetoresistance; Disk recording; Magnetic anisotropy; Magnetic heads; Magnetic recording; Perpendicular magnetic anisotropy; Saturation magnetization; Thermal stability; Transistors; Viscosity;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.560142

Filename

560142