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Ferroelectric properties of modified Ba-based perovskite compound and its solid solution with BaTiO3

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Abstract

Conventional ceramic preparation technique was used to synthesize Ba(Nb0.15Zr0.85)O3 (BNZ) and 0.9Ba(Nb0.15Zr0.85)O3 + 0.1BaTiO3 (BNZ + BT) samples. X-ray diffraction data revealed tetragonal crystal symmetry. Sintered pellets were investigated for dielectric and AC conductivity as a function of temperature and frequency. Dielectric properties of BNZ revealed a normal ferroelectric behaviour and BNZ + BT exhibited diffused phase transition. Curie temperatures obtained from dielectric measurements for BNZ and BNZ + BT were 295 K and 285 K respectively. AC conductivity of BNZ + BT is due to electron hopping and thermally activated Debye relaxation. Temperature dependant hysteresis measurements were also carried out. Hysteresis loops confirms the dielectric and ac conductivity behaviour of BNZ and BNZ + BT ceramics.

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Acknowledgements

One of the authors (STS) would like to thank the University Grants Commission, New Delhi, for the award of minor research project and Inter University Consortium, Indore (India) for providing low temperature dielectric measurements. Authors are grateful to Prof B. G. Mulimani, Vice-Chancellor, Gulbarga University, Gulbarga (India) for his kind encouragement and staff of Applied Electronics and Materials Science Depts. Gulbarga University, Gulbarga for their co-operation.

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Authors and Affiliations

  1. Department of Electronics, Sharnbasveshwar College of Science, Gulbarga, 585 103, Karnataka, India

    S. T. Sulepetkar

  2. Department of Materials Science, Gulbarga University, Gulbarga, 585 106, Karnataka, India

    R. L. Raibagkar

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  1. S. T. Sulepetkar
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  2. R. L. Raibagkar
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Correspondence to R. L. Raibagkar.

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Sulepetkar, S.T., Raibagkar, R.L. Ferroelectric properties of modified Ba-based perovskite compound and its solid solution with BaTiO3 . J Mater Sci: Mater Electron 18, 671–675 (2007). https://doi.org/10.1007/s10854-006-9055-x

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  • DOI: https://doi.org/10.1007/s10854-006-9055-x

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