Low temperature synthesis and characterization of BiNbO4 powders

TitleLow temperature synthesis and characterization of BiNbO4 powders
Publication TypeJournal Article
Year of Publication2008
AuthorsRadha, R, Muthurajan, H, N. Rao, K, Pradhan, S, Gupta, UN, Jha, RKumar, Mirji, SA, Ravi, V
JournalMaterials Characterization
Volume59
Issue8
Pagination1083-1087
Date PublishedAUG
ISSN1044-5803
KeywordsBiNbO4, 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.

DOI10.1016/j.matchar.2007.08.026
Type of Journal (Indian or Foreign)Foreign
Impact Factor (IF)1.496
Divison category: 
Catalysis and Inorganic Chemistry
Physical and Materials Chemistry