Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1572861 | Materials Characterization | 2008 | 5 Pages |
Abstract
BiNbO4 powders, a potential microwave dielectric ceramic were prepared by both co-precipitation 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 °C, whereas complete phase formation occurs only at 800 °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.
Related Topics
Physical Sciences and Engineering
Materials Science
Materials Science (General)
Authors
R. Radha, H. Muthurajan, N. Koteswara Rao, Sivaram Pradhan, U.N. Gupta, R.K. Jha, S.A. Mirji, V. Ravi,