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