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Complex Impedance Spectroscopy studies to unravel electrical properties and processes in Al+3-modified PLZT

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Abstract

The complex impedance spectroscopy studies on Al+3-modified PLZT (PLAZT) were carried out to understand the electrical properties and conduction phenomena in the system. The role of temperature on the grain and grain boundary resistances was interpreted and consequent relaxation times were evaluated to verify the investigation of complex impedance spectra. AC field-dependent dielectric response and conductivity of PLAZT were studied for a wide range of frequencies at different temperatures. Microstructure-dependent electrical conduction in the material at high temperatures (400–500 °C) was verified from frequency-dependent electrical data using conductivity and modulus formalism. The values of bulk, grain boundary conductivities, and activation energies of PLAZT were considered for interpreting the impedance data. A thermally activated electric conduction of ions and electrons was revealed in PLAZT for temperatures above 400 °C, which was evident from the frequency-dependent double relaxation process at these temperatures.

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The raw/processed data required to reproduce these findings of the present report cannot be shared at this time as the data also form part of an ongoing study.

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Acknowledgements

M A Jalaja acknowledges the support of the Council of Scientific & Industrial Research -National Aerospace Laboratories (CSIR-NAL) for a Research Fellowship.

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  1. Materials Science Division, CSIR-National Aerospace Laboratories, Bangalore, 560017, India

    M. A. Jalaja & Soma Dutta

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  1. M. A. Jalaja
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Contributions

Soma Dutta conceived and designed the experiments, and supervised the complete study. Jalaja MA prepared the samples, performed the experiments, and collected the data. Both the authors analyzed the data, wrote the manuscript, and agreed to the published version of the manuscript.

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Correspondence to Soma Dutta.

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Jalaja, M.A., Dutta, S. Complex Impedance Spectroscopy studies to unravel electrical properties and processes in Al+3-modified PLZT. J Mater Sci: Mater Electron 33, 26943–26953 (2022). https://doi.org/10.1007/s10854-022-09358-4

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