Microstructural and ionic transport studies of hydrothermally synthesized lanthanum fluoride nanoparticles
- School of Chemistry and Molecular Biosciences, The University of Queensland, St Lucia Campus, Brisbane 4072 (Australia)
This article presents the structural and transport characteristics of hydrothermally synthesized LaF{sub 3} nanoparticles with an average crystallite size of 35nm. The phase formation of the material is confirmed by both X-ray diffraction and transmission electron microscopy techniques. In addition, phase purity of the LaF{sub 3} nanoparticles is corroborated by micro-Raman spectroscopy studies. The complex impedance plots at different temperatures reveal that the conductivity is predominantly due to the intrinsic bulk grains and the conductivity relaxation is non-Debye in nature. The frequency variation of conductivity exhibits dispersion at higher frequencies that can be explained with the frame work of Almond-West formalism. The conduction process is controlled by the mobility of the charge carriers and the charge of transport of mobile fluoride ions occur through hopping mechanism. The scaling behavior of both frequency dependence of conductivity and complex impedance plots at different temperatures confirm that the relaxation mechanism of the mobile fluoride ions is independent of temperature.
- OSTI ID:
- 22420216
- Journal Information:
- AIP Advances, Vol. 4, Issue 12; Other Information: (c) 2014 Author(s); Country of input: International Atomic Energy Agency (IAEA); ISSN 2158-3226
- Country of Publication:
- United States
- Language:
- English
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