Effect of magnesium addition on the structural, microstructural and electrical properties of YVO4
authors Gayathri, TH; Yaremchenko, AA; Zakharchuk, K; James, J
nationality International
journal JOURNAL OF ALLOYS AND COMPOUNDS
author keywords Vanadate; Solid state synthesis; Chemical synthesis; Sintering; Microstructure; Electrical conductivity
keywords OXIDE-ION CONDUCTIVITY; CONDUCTORS; SR; MG; CA; ELECTROLYTES; TRANSPORT; EPR
abstract The synthesis of Y1-x/2MgxV1-x/2O4-delta (MgxYV) (x = 0.0-0.5) by solid state reaction technique is reported. This preparation method is compared with chemical synthesis method such as nitrate-citrate auto-combustion route. The crystal structure and the surface morphology of the samples were determined by X-ray Diffraction (XRD) and Scanning Electron Microscopy (SEM) techniques, respectively. Substantial decrease in phase formation temperature was observed for combustion method. The solubility limit of Mg in YVO4 lattice was found to be low i.e., x <= 0.1. The temperature dependence of conductivity of MgxYV samples indicated an increase in ionic conductivity values compared to the parent YVO4 due the formation of oxygen ion vacancies produced by the incorporation of acceptor Mg cations. Combustion-synthesized MgxYV samples showed higher conductivity compared to the samples prepared by conventional solid state reaction. (C) 2016 Elsevier B.V. All rights reserved.
publisher ELSEVIER SCIENCE SA
issn 0925-8388
year published 2016
volume 672
beginning page 549
ending page 557
digital object identifier (doi) 10.1016/j.jallcom.2016.02.210
web of science category Chemistry, Physical; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering
subject category Chemistry; Materials Science; Metallurgy & Metallurgical Engineering
unique article identifier WOS:000373464000076
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