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Title: Micromagnetic simulations of submicron cobalt dots

Abstract

Numerical simulations of submicron Co extruded elliptical dots were performed to illustrate the relative importance of different physical parameters on the switching behavior in the easy direction. Shape, size, magnetic moment magnitude, and the magnitude and distribution of the crystalline anisotropicity were varied. The simulation represents magnetostatic, exchange, and crystalline anisotropicity fields on a structured mesh using finite difference techniques. The smooth boundary of the dots is accurately represented by use of the embedded curve boundary method. Agreement with experimental hysteresis measurements of submicron dot arrays is obtained when an appropriate angular distribution of the grain anisotropicity axes is invoked. (c) 2000 American Institute of Physics.

Authors:
 [1];  [1]
  1. Lawrence Livermore National Laboratory, 7000 East Avenue, L-395, Livermore, California 94550 (United States)
Publication Date:
OSTI Identifier:
20216239
Resource Type:
Journal Article
Journal Name:
Journal of Applied Physics
Additional Journal Information:
Journal Volume: 87; Journal Issue: 9; Other Information: PBD: 1 May 2000; Journal ID: ISSN 0021-8979
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; COBALT; SIMULATION; MAGNETIC MOMENTS; EXCHANGE INTERACTIONS; CRYSTAL STRUCTURE; SHAPE; MEMORY DEVICES; THEORETICAL DATA

Citation Formats

Parker, G. J., and Cerjan, C. Micromagnetic simulations of submicron cobalt dots. United States: N. p., 2000. Web. doi:10.1063/1.373389.
Parker, G. J., & Cerjan, C. Micromagnetic simulations of submicron cobalt dots. United States. doi:10.1063/1.373389.
Parker, G. J., and Cerjan, C. Mon . "Micromagnetic simulations of submicron cobalt dots". United States. doi:10.1063/1.373389.
@article{osti_20216239,
title = {Micromagnetic simulations of submicron cobalt dots},
author = {Parker, G. J. and Cerjan, C.},
abstractNote = {Numerical simulations of submicron Co extruded elliptical dots were performed to illustrate the relative importance of different physical parameters on the switching behavior in the easy direction. Shape, size, magnetic moment magnitude, and the magnitude and distribution of the crystalline anisotropicity were varied. The simulation represents magnetostatic, exchange, and crystalline anisotropicity fields on a structured mesh using finite difference techniques. The smooth boundary of the dots is accurately represented by use of the embedded curve boundary method. Agreement with experimental hysteresis measurements of submicron dot arrays is obtained when an appropriate angular distribution of the grain anisotropicity axes is invoked. (c) 2000 American Institute of Physics.},
doi = {10.1063/1.373389},
journal = {Journal of Applied Physics},
issn = {0021-8979},
number = 9,
volume = 87,
place = {United States},
year = {2000},
month = {5}
}