Structural and Dielectric Properties of (Bi<sub>2</sub>O<sub>3</sub>Fe<sub>2</sub>O<sub>3</sub>)<sub>0.4</sub>(Nb<sub>2</sub>O<sub>5</sub>)<sub>0.6</sub> for Different Sintering Temperature
- 1 Electrical and Electronic Engineering Department, Chittagong University of Engineering and Technology, Chittagong, Bangladesh
- 2 Pilot Plant & Process Development Centre, Bangladesh Council of Scientific and Industrial Research, Dhaka, Bangladesh
- 3 Electrical and Electronic Engineering Department, Chittagong University of Engineering and Technology, Chittagong, Bangladesh
- 4 Pilot Plant & Process Development Centre, Bangladesh Council of Scientific and Industrial Research, Dhaka, Bangladesh
- 5 Institute of Fuel Research & Development, Bangladesh Council of Scientific and Industrial Research, Dhaka, Bangladesh
Abstract
In this research work, (Bi 2 O 3 Fe 2 O 3 ) 0.4 (Nb 2 O 5 ) 0.6 was made by the solid state reaction method. Samples were sintered at four different temperatures (850°C, 925°C, 1000°C and 1150°C) to study the effect of sintering temperature on the various properties of the samples. X-ray diffraction analysis confirmed that single phase Bi 1.721 δ 0.089 Fe 1.056 Nb 1.134 O 7 was found when sintering temperature in creased. At the same time, larger grain size was found when sintering temperature increased. From variation of dielectric loss with respect to frequency, a small peak was found when sample was sintered at higher temperature (1150°C). Dielectric constant of the sample decreases with the increase of frequency for all the samples. With the variation of temperature, DC resistivity of the samples showed that resistivity decreases with the increase of measuring temperature which indicates semiconducting nature.
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