µMAG Standard Problem #4 results

See the problem specification.
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Solution directory


Submitted Solution: R. D. McMichael, M. J. Donahue, and D. G. Porter

Date:
September 27, 2000.
From:
R. D. McMichael, M. J. Donahue, and D. G. Porter.
National Institute of Standards and Technology, Gaithersburg, MD 20899
J. Eicke
Institute for Magnetics Research,
George Washington University, Washington, DC 20052
Contact:
Bob McMichael

We used the OOMMF public code to compute solutions to standard problem #4. The mesh was a 2D square grid with 3D spins interacting through the exchange interaction and magnetostatic fields. Magnetostatic energy was computed under the assumption that the magnetization was uniform within each cell, and the field due to the magnetostatic charges at the cell boundaries was averaged over each cell. Except where noted below, the exchange energy was calculated using a "eight-neighbor dot product" representation. The maximum time step was set at 0.2 ps, but smaller time steps are taken when necessary to keep the error within certain bounds. See the OOMMF documentation for mmsolve for details on the solver.

Results:

Raw data:

Please note that the following data follows a coordinate system that is rotated 90° from the specified coordinate system. Vector data is in the ovf format.


Please send comments to rmcmichael@nist.gov and join the µMAG discussion e-mail list.


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21-DEC-2005