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Dielectric properties of Cu substituted Ni0.5−xZn0.3Mg0.2Fe2O4 ferrites

“…It is observed that as temperature increases tan ı begins to increase until it attains a maximum value. Similar behavior was observed in case of zinc substituted magnesium rich manganese ferrites [32] and also in rare earth substituted Cu-Zn ferrites [33]. The gradual shift in loss tangent edge for samples x = 0 and x = 0.5 indicates that hopping mechanism is operative in this process.…”

AC conductivity and frequency dependence of the dielectric properties for copper doped magnetite

“…This reduction of jumping probability may be ascribed to the decrease of iron ion in the B-site, which is responsible for the polarization in this ferrite. A similar behavior was observed in zinc-substituted magnesium-rich manganese ferrite [25], Nd-Cu ferrite [26], Gd-Cu ferrite [27], Ni-Zn ferrite [22] and also in Cu-Zn ferrite [28].…”

Studies on structural and electrical properties of Co1−xNixFe1.9Mn0.1O4 ferrite

“…These measurements show that with increasing temperature (tan ı) begins to increase until it attains a maximum value. Similar behavior was observed in zinc substituted magnesium rich manganese ferrites [25] and also in rare earth substituted Cu-Zn ferrite [26]. Moreover, it was mentioned that the dielectric material is a mixture of two or more polar substances.…”