Abstract
A nonuniform magnetic configuration for rapid rotational flux reversal in square-loop ferrite cores is analyzed. It is shown that the demagnetizing effects due to the boundary of the toroid are, to a good approximation, negligible for toroids with cross-sectional radii as small as 2.5×10−2 cm. A basic assumption of an earlier rotational model of flux reversal was that these demagnetizing fields could be neglected. The predictions of this modified model at high drives are similar to those of the earlier model. The possibility of correlating Hc (the intercept of the extrapolated linear region of the inverse switching time versus drive field plot) with more basic parameters through a model of this type is indicated.
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