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Title: Effects of V2O5 additive on structure and dielectric properties of BiNbO4 ceramics
Other Titles: Wpływ V2O5 na strukturę i właściwości dielektryczne ceramiki BiNbO4
Authors: Lisińska-Czekaj, Agata
Czekaj, Dionizy
Osińska, Katarzyna
Adamczyk-Habrajska, Małgorzata
Keywords: BiNbO4 ceramics; V2O5 additive; morphology; crystal structure; phase analysis; dielectric properties
Issue Date: 2013
Citation: Archives of Metallurgy and Materials, Vol. 58, iss. 4, (2013), s. 1387-1390
Abstract: Goal of the present research was to investigate the influence of V 2O5 additive on the structure and dielectric properties of BiNbO4 ceramics. To fabricate BiNbO4 ceramics with V2O5 added the solid state reaction route and pressureless sintering was utilized. Thus obtained ceramics was characterized in terms of its microstructure (SEM), chemical composition (EDS), phase composition and crystalline structure (X-ray phase and structural analysis, respectively). Also dielectric properties in both temperature and frequency domains were investigated. The impedance spectroscopy was utilized for dielectric characterization and the measurements of complex impedance were performed within the frequency range ν =10Hz-1MHz and temperature range T =RT-550°C. It was found that V2O5 additive changed slightly lattice parameters of BiNbO4 ceramics, decreased porosity of samples and revealled relaxation phenomena within the frequency ranges ν =102-103Hz and ν =105-106Hz at temperature T>285°C.
DOI: 10.2478/amm-2013-0180
ISSN: 1733-3490
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