Electrical and Dielectric Characterization of Na_0.5Li_0.5Zr₂(PO₄)₃

Umaru Ahmadu, Kasim Uthman Isah, Abubakar Ohinoyi Musa, Tomas Salkus

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DOI: 10.4236/ojpc.2011.13013                

Abstract

Na_0.5Li_0.5Zr₂(PO₄)₃has been synthesized by solid state reaction and characterized by thermogravimetry/ differential thermal analyses (TGA/DTA) in the temperature range 300 - 1573 K. X-ray diffraction measure- ments have been carried out to determine the phase of the composition and scanning electron microscopy (SEM) for microstructure evaluation. Impedance spectroscopy at different temperatures (310 - 600 K) and frequencies (300 kHz - 1 GHz) have been carried out and the dielectric relaxation behaviour was determined under the same conditions. A dc conductivity maximum value of 0.25 S/m at 580 K was observed. However, the mixed alkali effect was not observed. The material exhibited relaxation behaviour with a peak in the dielectric permitivity at 469 K. There were no structural transformations observed.

Keywords

NZP, Impedance Spectroscopy, Dielectric Relaxation, Electrical Conductivity

Conflicts of Interest

The authors declare no conflicts of interest.

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