Demagnetization Coefficient of a Rotating Ellipsoid
Author: kegasaExecutions: 122
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Demagnetizing factor of an ellipsoid
m = a/b;
if(m==1) {m=1.0001;}
L = (1/(m^2-1)) * ((m/(2*sqrt(m^2-1))) * ln((m + sqrt(m^2-1))/(m - sqrt(m^2-1))) - 1);
M = (m/(2*(m^2-1))) * (m - (1/(2*sqrt(m^2-1))) * ln((m + sqrt(m^2-1))/(m - sqrt(m^2-1)))));
μeff = 1/(L + (1 - L)/μr);
μeffmax = 1/L;
print(a);
print(b);
print(m);
print(L);
print(μr);
print(μeff);
print(μeffmax);
print(M);
if(m==1) {m=1.0001;}
L = (1/(m^2-1)) * ((m/(2*sqrt(m^2-1))) * ln((m + sqrt(m^2-1))/(m - sqrt(m^2-1))) - 1);
M = (m/(2*(m^2-1))) * (m - (1/(2*sqrt(m^2-1))) * ln((m + sqrt(m^2-1))/(m - sqrt(m^2-1)))));
μeff = 1/(L + (1 - L)/μr);
μeffmax = 1/L;
print(a);
print(b);
print(m);
print(L);
print(μr);
print(μeff);
print(μeffmax);
print(M);
| a | mm |
| b | mm |
| m | |
| L/(4*pi) | |
| μr | |
| μeff | |
| μeffmax = 1/(L/(4*pi)) | |
| M/(4*pi) |
Demagnetizing Factor of General Ellipsoids
by Osborn
1945
http://www.cmap.polytechnique.fr/~alouges/coursm2/Osborn.pdf
by Osborn
1945
http://www.cmap.polytechnique.fr/~alouges/coursm2/Osborn.pdf
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