International Journal of Waste Resources

Synthesis, dielectric and impedance spectroscopy study of temperature stable Ta2O5 modified 0.85BaTiO3-0.15Bi (Mg0.5Ti0.5) O3 ceramics

World Congress on Sustainable Waste Management

June 21, 2023 | Webinar

Abdul Manan

University of Science & Technology Bannu, Pakistan

Scientific Tracks Abstracts: Int J Waste Resour

Abstract:

Electro ceramics are very useful and employed in various electronic devices such as sensors, actuators, dielectric resonators, and capacitors for energy storage. Lead-based materials possess good energy storage properties but since lead is toxic, therefore, stress is given to the use of lead free materials. BaTiO3 is a widely studied lead-free material. Several solid solutions of BaTiO3 led to improvement in the energy storage properties. In the present study, Ta2O5 added 0.85BaTiO3-0.15Bi (Mg0.5Ti0.5) O3 processed via the conventional mix oxide route. The Phase, microstructure, and dielectric properties were studied. Single perovskite phase developed and studied via XRD. Dense ceramics for each composition was developed with the pseudo-crystal structure. Low grain size <3 m is achieved for each composition. A high dielectric constant r > 1000 and low dielectric loss (<2.5%) is obtained for z≤0.20, with high stability over a broad range of temperatures (<0 °C to 180 °C). These compositions are considered to be suitable for designing X9R capacitors. In complex impedance analysis. The decreasing value of the bulk impedance upon increasing the temperature revealed the negative temperature coefficient of resistance (NTCR) behaviour. The small conductivity and high activation energy value for x=0.01 demonstrates the temperature stability of this ceramic.

Biography :

Dr. Abdul Manan did PhD in Physics from University of Peshawar, Pakistan in 2011; He worked in Group of Professor Ian M. Reaney, Department of Materials Science and Engineering University of Sheffield UK. He also worked with the group of Professor Hanxing liu, School of Materials Science and Engineering, Wuhan University of Technology China. His research Interest spam over the development of dielectric resonators and dielectric capacitors for energy storage. He is currently working as Head of the department of Physics, University of Science& Technology Bannu. He is the author of about 80 research publications.