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- W2062445341 abstract "The transport properties of Nd-doped perovskite materials (La0.7−xNdx)Sr0.3Mn0.7Cr0.3O3 (x≤0.30) were investigated using impedance spectroscopy techniques over a wide range of temperatures and frequencies. AC conductance analyses indicate that the conduction mechanism is strongly dependent on temperature and frequency. The DC conductance plots can be described using the small polaron hopping (SPH) model, with an apparent reduction of the polaron activation energy below the Curie temperature TC. Complex impedance plots exhibit semicircular arcs described by an electrical equivalent circuit. Off-centered semicircular impedance plots show that the Nd-doped compounds obey to a non-Debye relaxation process. The conductivity of grains and grain-boundaries has been estimated. The activation energies calculated from the conductance and from time relaxation analyses are comparable. This indicates that the same type of charge carriers is responsible for both the electrical conduction and relaxation phenomena." @default.
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- W2062445341 date "2011-05-01" @default.
- W2062445341 modified "2023-10-15" @default.
- W2062445341 title "Complex impedance spectroscopy studies of (La0.70−xNdx)Sr0.30Mn0.70Cr0.30O3 (x≤0.30) perovskite compounds" @default.
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- W2062445341 doi "https://doi.org/10.1016/j.physb.2011.03.025" @default.
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