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Publication Citation: Behavior of  MAG Standard Problem No. 2 in the Small Particle Limit

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Author(s): Michael J. Donahue; Donald G. Porter; Robert D. McMichael; J Eicke;
Title: Behavior of  MAG Standard Problem No. 2 in the Small Particle Limit
Published: May 01, 2000
Abstract: For a uniformly magnetized rectangular particle with dimensions in the ratio 5 : 1 : 0.1, the coercive and switching fields in the (1,1,1) direction are determined to be Hc / Ms = 0.057069478 and Hs / Ms = 0.057142805.  Previous micromagnetic computations of coercive and switching fields that did not approach these values for small particles are analyzed.  It is shown that the disagreement was primarily due to a disparity in the method of calculating demagnetization energy.  Corrected simulations are shown to agree with analytically determined values.
Citation: Journal of Applied Physics
Volume: 87
Issue: No. 9
Pages: pp. 5520 - 5522
Keywords: micromagnetic modeling;small particle limit;standard problems
Research Areas:
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