DISCLAIMER/GPL TERMS AND CONDITIONS: see GNU General Public License
This tool (Javascript program) calculates the magnetostatic self energy and demagnetizing factor of a uniformly magnetized ferromagnetic rectangular prism analytically [1].
Geometry of a regular prism with edge lengths 2a,2b,2c
This provides a quick and simple test if a micromagnetic code calculates the magnetostatic energy correctly. As input the 3 edge lengths of the prism and the magnetization saturation are required.
Dz is the demagnetizing factor when the body is magnetized uniformly along the z-axis.
This calculator evaluates the following formula:
The self energy per volume unit then becomes:
Note that:
JavaScript code developed, published under GPL, and contributed by Rok Dittrich.
[1] Amikam Aharoni, "Demagnetizing factors for rectangular ferromagnetic prisms"
J. Appl. Phys. 83 (1998) 3432 [ J. Appl. Phys. 1 ], [ J. Appl. Phys. 2 ]