Dielectric and impedance study of ‘Ca’-doped BaFe0.5Nb0.5O3 complex perovskite

Electric and Magnetic Properties of the Multiferroic Composites Made Based on Pb(Fe1/2Nb1/2)1−xMnxO3 and the Nickel-Zinc Ferrite

“…With increasing temperature, the DC electrical conductivity of composite samples increases consistently, which is related to the increased drift mobility of thermally activated charge carriers [ 56 ]. The increase in electrical conductivity at higher temperatures may be ascribed to the hopping nature of charges in Fe 3+ ↔ Fe 2+ and Nb 5+ ↔ Nb 4+ [ 57 ]. It was noticed that the composite sample without Mn admixture (PFN-F) shows the highest electrical conductivity.…”

Investigation of the structural, dielectric, magnetic properties and NTC-thermistor response of CaBiFeMnO6 double perovskites

“…A greater polarization in the ceramic at lower frequencies is evidenced, as indicated by a higher value. [47][48][49] Grain-grain interaction, grain boundary, and electrode interface are the three primary components that mediate the decrease in resistances that occur when the Z 0 and Z 00 values abruptly fall at higher frequencies and temperatures. 22 The semiconducting behaviour of the synthesized specimen can be witnessed by the negative temperature coefficient of resistance (NTCR), which is correlated with the decrease in the impedance value when considering the real impedance for various temperatures.…”