Electrical and Dielectric Characterization of Na0.5Li0.5Zr2(PO4)3

Autor:	Tomas Salkus, Umaru Ahmadu, Abubakar Ohinoyi Musa, K. U. Isah
Rok vydání:	2011
Předmět:	Permittivity Thermogravimetry Materials science Scanning electron microscope Analytical chemistry Relaxation (physics) Dielectric Atmospheric temperature range Microstructure Dielectric spectroscopy
Zdroj:	Open Journal of Physical Chemistry. :94-103
ISSN:	2162-1977 2162-1969
DOI:	10.4236/ojpc.2011.13013
Popis:	Na0.5Li0.5Zr2(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.
Databáze:	OpenAIRE
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