Abstract
A recent paper by Wenny and Gould reported a pronounced ``Perminvar''-type constricted B-H loop in hard-rolled Co-10% Fe sheet magnetized in the rolling direction. The conditions for obtaining the constricted loop are quite different from those which underlie similar phenomena in the Perminvar alloys. Based on further experiments described in this report, the constricted loop is related to the combined effects of two factors:(1) A very high negative magnetocrystalline anisotropy constant, K1=−7.5×105 erg/cm3; and(2) A crystallographic texture having two distinct {110} 〈112〉 components, present as small crystallites. These factors have been incorporated into a model which quantitatively accounts for the main features of this phenomenon. The role of magnetostatic effects at internal crystal boundaries is emphasized.
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