Title :
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
fDate :
1/1/1997 12:00:00 AM
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;
Journal_Title :
Magnetics, IEEE Transactions on
