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

Published

Author(s)

Michael J. Donahue, Donald G. Porter, Robert D. McMichael, J Eicke

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

Keywords

micromagnetic modeling, small particle limit, standard problems

Citation

Donahue, M. , Porter, D. , McMichael, R. and Eicke, J. (2000), Behavior of  MAG Standard Problem No. 2 in the Small Particle Limit, Journal of Applied Physics, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=150771 (Accessed February 25, 2024)
Created May 1, 2000, Updated February 17, 2017