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Ultrasound Velocity Measurement in a Liquid Metal Electrode
Published on: August 5, 2015
The electrical behaviour of ultrafine bismuth phosphate particles under a range of temperature and frequency
Sarit K Ghosh1, Venkata Perla1, Kaushik Mallick1
1Department of Chemical Sciences, University of Johannesburg, P.O. Box: 524, Auckland Park, 2006, South Africa. kaushikm@uj.ac.za.
Abstract:
Organic-molecule-stabilized ultrafine bismuth phosphate was synthesized by applying a wet chemical complexation-mediated route. Structural analysis confirmed the formation of monoclinic-phase nanoparticles made up of four-coordinated PO4 tetrahedral and eight-coordinated BiO8 polyhedral units. The dielectric, electrical conductivity, and impedance behaviour of the synthesized material was investigated under a wide range of frequency and temperature conditions. An alternating current conductivity study confirmed that the conduction process was followed by small and large polaron tunnelling mechanisms. An electric field-induced polarization study showed the formation of a hysteresis loop, generated as a result of the strong dipolar interactions through the Bi-O-type covalent bonds.

