Investigation of Dielectric Properties of Quaternary Ceramic 0.47BNT-0.04BT-0.37PMN-0.18PT

Authors

  • Aparna Saxena

    Hindu College, University of Delhi, Delhi 110007, India

  • Abhilash J. Joseph

    University of Delhi, 110007, Delhi, India

  • Raghvendra Sahai Saxena

     Solid State Physics Laboratory, Lucknow Road, Timarpur, Delhi-110054, India

DOI:

https://doi.org/10.30564/nmms.v5i2.6271

Abstract

Dielectric dispersion analysis has been carried out for the first time on a new quaternary ceramic [0.47(Bi0.5Na0.5)TiO3-0.04BaTiO3-0.31Pb(Mg1/3Nb2/3)O3-0.18PbTiO3] having a morphotropic phase boundary composition. The measurement of the dielectric parameters has been carried out in the frequency range of 200 Hz to 2 MHz and temperature range from 30 oC to 300 oC. The material showed high dielectric constant, low dielectric loss, negligible DC conductivity and high ferroelectric to paraelectric transition temperature. A clear Debye type relaxation was observed in the dielectric constant and dielectric loss data. An interesting feature of two Debye peaks has been noticed in dielectric loss versus frequency curves in the temperature range 125 oC to 175 oC. These peaks shift towards higher frequencies when temperature is increased. The extracted relaxation times of the two peaks are three orders of magnitude different and have been found to follow the Arrhenius law with significantly different activation energies.

Keywords:

BNT-BT, Debye dispersion, PMN-PT, Quaternary ceramic

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How to Cite

Saxena, A., J. Joseph, A., & Sahai Saxena, R. (2024). Investigation of Dielectric Properties of Quaternary Ceramic 0.47BNT-0.04BT-0.37PMN-0.18PT. Non-Metallic Material Science, 5(2), 26–36. https://doi.org/10.30564/nmms.v5i2.6271

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