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Effect of sintering temperature on the grain growth and electrical properties of barium zirconate titanate ferroelectric ceramics

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Abstract

In the present work, structural, dielectric and ferroelectric properties of barium zirconate titanate ferroelectric ceramics have been investigated. The specimens were synthesized using a solid state reaction technique. The XRD analysis reveals that the synthesized compound was formed with no secondary phases. As the sintering temperature increases from 1,200 to 1,300 °C, the average grain size is observed to increase from ~0.39 to ~6.15 μm. The dielectric measurements as a function of temperature show a decrease in Curie temperature (TC) on increasing the sintering temperature. The decrease in Curie temperature is attributed to the substitution of Zr+4 whose ionic radius is larger than Ti+4. A large increase in the dielectric constant with the increase in grain size is observed. The remanent polarization is also observed to increase with the increase in grain size.

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Authors and Affiliations

  1. Thin Film and Material Science Laboratory, Department of Applied Physics, Delhi Technological University (Formerly Delhi College of Engineering), Bawana Road, Delhi, 110042, India

    Priyanka A. Jha & A. K. Jha

  2. Department of Applied Sciences, A.I.A.C.T.R., Geeta Colony, Delhi, 110031, India

    A. K. Jha

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  1. Priyanka A. Jha
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Jha, P.A., Jha, A.K. Effect of sintering temperature on the grain growth and electrical properties of barium zirconate titanate ferroelectric ceramics. J Mater Sci: Mater Electron 24, 1511–1518 (2013). https://doi.org/10.1007/s10854-012-0963-7

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