Impedance spectroscopy and conductivity mechanism of CoFe2O4–Pb(Zr0.53Ti0.47)O3 composite thick films

Structural and Electrical Properties of Ni‐Substituted Mg‐Mn Nanoferrite by Coprecipitation Route

“…It was observed that the grain boundary resistance increased with increase in Ni concentration. It was in good agreement with these nanoferrites have higher electrical resistivity . Figure shows that the graph drawn between log f versus | I ac | (A).…”

“…It was in good agreement with these nanoferrites have higher electrical resistivity. 17,18 Figure 13 shows that the graph drawn between log f versus |I ac | (A). The current values decreased with increase in Ni composition.…”

Impedance Spectroscopy of Nanostructure p-ZnGa2Se4/n-Si Heterojunction Diode

“…The values of τ were determined from the maximum peak positions of Fig. 3 using the relation, ωτ = 2πf max τ = 1 [16]. The variation of relaxation time τ with temperature is shown in Fig.…”

Impedance spectroscopic characterization of fine-grained magnetoelectric Pb(Zr0.53Ti0.47)O3–(Ni0.5Zn0.5)Fe2O4 ceramic composites

“…As shown in Fig. 10, there was a strong rise at low frequencies (below 1 kHz), which is due to the grain boundary blocking effect [21]. At 200 • C, low frequency conductivity curve tended to slightly flatten suggesting the dc conductivity behavior (in here, the temperature is not high enough (above 200 • C) to exhibit the more evidences of this frequency independent conductivity due to the limitation of the equipment).…”

“…An equivalent circuit based on impedance and modulus spectra provides the physical process occurring inside the sample. Impedance spectroscopic studies of electrochemical properties of electrode alloys, [16,17], ferro-electromagnetic ceramic Pb(Fe 1/2 Nb 1/2 )O 3 [18], and magnetoelectric single-phase Bi 6 Fe 2 Ti 3 O 12 compounds [19], as well as Pb(Zr,Ti)O 3 (PZT)/CoFe 2 O 4 (CFO) multilayers composite thin films [20,21] have been carried out; they described the connection between microstructure and electrical properties and dielectric behaviors with the help of impedance spectroscopy.…”