Low temperature synthesis and characterization of BiNbO4 powders
Title | Low temperature synthesis and characterization of BiNbO4 powders |
Publication Type | Journal Article |
Year of Publication | 2008 |
Authors | Radha, R, Muthurajan, H, N. Rao, K, Pradhan, S, Gupta, UN, Jha, RKumar, Mirji, SA, Ravi, V |
Journal | Materials Characterization |
Volume | 59 |
Issue | 8 |
Pagination | 1083-1087 |
Date Published | AUG |
ISSN | 1044-5803 |
Keywords | BiNbO4, Ceramics, Chemical synthesis, Electron microscopy, Oxides, X-ray diffraction |
Abstract | BiNbO4 powders, a potential microwave dielectric ceramic were prepared by both coprecipitation and solid state techniques. In the former method, an aqueous ammonium hydroxide was used to precipitate Bi3+ and Ta5+ cations as hydroxides simultaneously under basic conditions. It is observed that the co-precipitation produces BiNbO4 phase on heating at 600 degrees C, whereas complete phase formation occurs only at 800 degrees C in the case of solid state method. The phase contents and lattice parameters were studied by powder X-ray diffraction. The sequence of the reaction and phase evolution of BiNbO4 were also studied by the X-ray diffraction. The samples were characterized by the differential-thermal/thermo-gravimetric analyses and scanning electron microscopy techniques. (C) 2007 Elsevier Inc. All rights reserved. |
DOI | 10.1016/j.matchar.2007.08.026 |
Type of Journal (Indian or Foreign) | Foreign |
Impact Factor (IF) | 1.496 |