Possibility of controlling the conduction mechanism by choosing a specific doping element in a praseodymium manganite system

Abstract

Electrical properties of Pr0.7Ca0.3Mn0.9X0.1O3 (X = Co, Ni, Cr and Fe) systems have been investigated using impedance spectroscopy measurements.

Electrical conductivity and dielectric properties of Sr doped M-type barium hexaferrite BaFe12O19

“…There are several models, which can explain the ac-conduction mechanism in the disordered materials. For example, Mott variable range hopping conductivity, 60 Efros-Shklosvkii conduction, 61 ac-conduction mechanism with potential fluctuations. 62 However, we believe that the Correlated Barrier Hopping (CBH) is the most suitable model to describe the conductivity in this temperature region.…”

AC conductivity and phase transition of the BST–BFO ceramic doped with Yb

“…Jonscher's law is commonly used to explain the phenomenon of conductivity dispersion: 42,59,60 σ AC ( ω ) = σ DC + Aω S where DC denotes DC conductivity, A is a temperature-dependent constant, and S denotes the degree of mobile ion interaction. 61…”

“…57 Second, the AC conductivity-compatible dispersion regime occurs at a higher frequency. 58 Jonscher's law is commonly used to explain the phenomenon of conductivity dispersion: 42,59,60 s AC (u…”

Structural, morphological, and electrical properties of silver-substituted ZnAl2O4nanoparticles

“…According to Mott theory and basing on the conducted experimental results by Moualhi et al, the electrical conductivity of the oxides materials, at low temperatures, was explained by the activation of the variable range hopping process. 64,65 In such case, the conduction process thermally inactivated. By increasing the temperature, a small polaron will formed, leading to the activation of the small polaron hopping mechanism.…”

“…The aforementioned model was recently proposed to investigate the electrical response of manganite and ferrite oxides. [64][65][66][67] In addition, both SPH and VRH models were used to investigate the electrical response of thin lm materials. 68,69…”