Temperature dependence of electrical properties of nickel–zinc ferrites processed by the citrate precursor technique

Frequency and temperature dependent transport properties of NiCuZn ceramic oxide

“…This suggests that the high-temperature anomaly in our sample may be related to oxygen vacancies. The increase in ε with temperature has earlier been observed for the Mg-Ti [26], Ni-Zn [27], Mg-Zn [28] ferrites. The hopping of electrons between Fe 2+ and Fe 3+ ions at adjacent B-sites is thermally activated on increasing the temperature.…”

Effect of Sintering Time on the Structural, Magnetic and Electrical Transport Properties of Mg<sub>0.35</sub>Cu<sub>0.20</sub>Zn<sub>0.45</sub>Fe<sub>1.94</sub>O<sub>4</sub> Ferrites

“…ε′ increases as the temperature increases which is the normal dielectric behaviour magnetic semiconductor ferrites. The increase in ε′ with temperature was earlier observed for the Mg-Ti [35], Ni-Zn [36,37], Li 0.5 Fe 2.5 O 4 [38], Mg-Zn [39] ferrites. The hopping of electrons between Fe 2+ and Fe 3+ ions (at adjacent B-sites) is thermally activated on increasing the temperature.…”

Reduced leakage current and improved ferroelectricity in magneto-electric composite ceramics prepared with microwave assisted radiant hybrid sintering

“…This kind of insignificant temperature dependence at higher frequencies is a common feature observed in ferrites and explained in terms of frequency dependence of different contributions viz., interfacial, dipolar, atomic and electronic polarizations. 19 Therefore, the peak at T 2 is attributed to the NZFO phase. The 5% Sn doped BaTiO 3 (BTSO) that is used as FE component in the present work shows three phase transitions i.e., cubic to tetragonal (T C−T ) at 360 K, tetragonal to orthorhombic (T T −O ) at 296 K and rhombohedral to orthorhombic (T O−R ) 246 K. 12 Unlike pure BTSO, the composite samples in the present work show broad transitions and also the T C is observed to be shifted to slightly higher temperatures.…”