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Field Calculations for a Permanent Magnet Dipole

Calculates the field strength for a Steel Dipole

For a dipole, the field within the airgap may be calculated by assuming that the steel yoke has the effect of double the magnetic length of the magnet volume - the field through the airgap volume can then be determined to within respectable limits (+/- 5% or so). Better results are achieved with rare earth materials. Enter the length of the Air gap (G) along the z-axis, together with the X, Y and Z Coordinates.

Residual Induction (Br) data is on our magnet material pages.