Search
Abstract
Aim of the present research was to fabricate and study crystalline structure as well as dielectric properties of BiNbO4 ceramics. In the present study BiNbO4 ceramics was fabricated by solid state reaction from the mixture of simple oxides viz. Bi2O3, and Nb2O5. Stoichiometric mixture of the powders was thermally analyzed so parameters of the thermal treatment were determined. The EDS measurements proved conservation of the chemical composition of the ceramic powder after calcination (T=800°C). Free sintering at T=870 – 1080 °C was used for fabrication of the ceramic samples. Morphological analysis using scanning electron microscopy was performed. The crystalline structure of the sintered samples were examined by X-ray diffraction method at room temperature. It was found that for low temperature of sintering (T0C) bismuth niobate crystallized in orthorhombic symmetry Pnna (52) whereas for high sintering temperature (T>1000 °C) BiNbO4 exhibited anorthic symmetry P-1 (2). Low frequency (ν=100Hz – 1MHz) impedance spectroscopy was applied to study influence of the sintering temperature on dielectric properties of bismuth niobate at room temperature. The equivalent circuit method was used for analysis of the impedance data.
Citations
-
8
CrossRef
-
0
Web of Science
-
9
Scopus
Authors (2)
Cite as
Full text
full text is not available in portal
Keywords
Details
- Category:
- Articles
- Type:
- artykuły w czasopismach
- Published in:
-
Key Engineering Materials
no. 512-515,
pages 1212 - 1217,
ISSN: 1662-9795 - Language:
- English
- Publication year:
- 2012
- Bibliographic description:
- Lisińska-Czekaj A., Czekaj D.: Fabrication and Study of BiNbO4 Ceramics// Key Engineering Materials -Vol. 512-515, (2012), s.1212-1217
- DOI:
- Digital Object Identifier (open in new tab) 10.4028/www.scientific.net/kem.512-515.1212
- Verified by:
- Gdańsk University of Technology
seen 78 times
Recommended for you
Effects of V2O5 Additive on Structure and Dielectric Properties of BiNbO4 Ceramics
- A. Lisińska-Czekaj,
- D. Czekaj,
- K. Osińska
- + 1 authors
Mg2+ Doping Effects on the Structural and Dielectric Properties of CaCu3Ti4O12 Ceramics Obtained by Mechanochemical Synthesis
- P. Dulian,
- W. Bąk,
- M. Piz
- + 5 authors