Charge control of magnetic amplifiers: Part I ¿ Dynamic properties of square-hysteresis-loop ferromagnetics

The physical properties pertaining to the remagnetization of square-loop ferromagnetics are reviewed, and comparisons between characteristics obtained experimentally and those predicted by several models of the flux reversal, are drawn. The nonuniformity of domain walls is inferred as a predominant feature of the remagnetization process. New, generalized core parameters are developed, these being essentially ¿charge control parameters¿ directly derived from the ¿flux-charge¿ characteristics of the material at the fixed time of the irreversible portion of remagnetization. These parameters characterize dynamic behavior of the core in conjunction with the operation of magnetic amplifiers.