Journal
SOLID STATE IONICS
Volume 147, Issue 1-2, Pages 49-59Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/S0167-2738(02)00005-X
Keywords
NASICON type glasses; ac conductivity; activation energy; ion dynamics; scaling analysis
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Different NASICON type ionic conducting systems with general formula A(m)B(n)P(3)O(12) were prepared by quenching method, where A= Na, and B=Al, Ti, AlCd, TiCd and TiZn. The prepared compounds were characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR) and differential scanning calorimetry (DSC). The electrical conductivity measurements were made on the different systems as a function of frequency at different temperatures. Jonscher's universal power law is applied to discuss the ac and do conductivity and the scaling of conductivity spectrum. The conductivity spectra of the compounds show the power law feature and scaling behavior when the conductivity spectra are scaled vertically by do conductivity and horizontally by hopping rate. The do conductivity of the compounds is found to be in the range 10(-9)-10(-6) S cm(-1) at 423 K. The do conductivity and hopping rate activation energies are found to be in the range 0.47-1.13 eV. (C) 2002 Elsevier Science B.V All rights reserved.
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