DEMAGNETIZING FIELD STRENGTH OF A CUBOID STEEL MAGNETIZED LONGITUDINALLY IN STABLE CONDITION

According to the distribution law of magnetic charges of a cuboid steel magnetized longitudinally in stable condition (magnetic charges distribute uniformly along all edges of the cuboid steel), the analytic expression for the demagnetizing field strength of an arbitrary point in the cuboid steel and some typical spatial distribution curves were given. Digital calculation showed that under the condition the demagnetizing field strength of a cuboid steel had not only negative value but also positive and zero ones.