NUMERICAL SIMULATION OF THERMOMAGNETIC WRITING IN RE-TM FILMS.

T. W. McDaniel, Masud Mansuripur

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

We have developed a simplified micromagnetics simulation of the behavior of RE-TM films that produces an equilibrium configuration of film magnetization for a specified thermal profile and applied magnetic field. This Monte Carlo-type model is useful for assessing the size, shape, and stability of written marks in MO recording. In addition, the simulation provides estimates of the minimum field strength required for nucleation and growth of reversed domains, and hence it predicts film coercivity at any temperature. An equilibrium state is determined by magnetic energy minimization. Magnetization dynamics are not incorporated into the model, but instead, a quasi-static approach to equilibrium is simulated. Spatial resolution can be arbitrarily small, and discretization down to about 20 nm can be reasonably accommodated. Readout of written domains has been incorporated as an additional feature of this model.

Original languageEnglish (US)
Pages (from-to)2943-2945
Number of pages3
JournalIEEE Transactions on Magnetics
VolumeMAG-23
Issue number5
StatePublished - Sep 1987
Externally publishedYes

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Magnetization
Computer simulation
magnetization
simulation
Coercive force
coercivity
readout
field strength
Nucleation
spatial resolution
recording
nucleation
Magnetic fields
optimization
estimates
profiles
configurations
magnetic fields
Temperature
temperature

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Physics and Astronomy (miscellaneous)

Cite this

NUMERICAL SIMULATION OF THERMOMAGNETIC WRITING IN RE-TM FILMS. / McDaniel, T. W.; Mansuripur, Masud.

In: IEEE Transactions on Magnetics, Vol. MAG-23, No. 5, 09.1987, p. 2943-2945.

Research output: Contribution to journalArticle

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