The properties of Mn-substituted NiCuZn ferrites, (Ni0.2Cu0.2Zn0.6O)1.03(Fe2−xMnxO3)0.97 and (Ni0.2−xMnxCu0.2Zn0.6O)1.03(Fe2O3)0.97 sintered at a low temperature, were investigated in this study. When Mn was substituted for Fe ranging from 0 to 0.04 and for Ni ranging from 0 to 0.01, initial permeability and bulk density increased within these substitution ranges. At the same time, these two NiCuZn ferrites have the larger grain size. In these two compositions, resistivity was decreased with Mn content but coercivity tended to vary sensitively with increasing Mn content.
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Nam et al. (1997) studied this question.
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