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Optimization of poling parameters of mechanically processed PLZT 8/60/40 ceramics based on dielectric and piezoelectric studies

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  • Ajeet Kumar
  • V. Bhanu Prasad
  • K. James Raju
  • A. James

Abstract

Ultra high strain (Pb 0.92 La 0.08 )(Zr 0.60 Ti 0.40 )O 3 (PLZT 8/60/40) piezoelectric ceramics were synthesized by high energy ball milling method to study the relation between poling conditions (poling electric fields, times and temperatures) and electrical properties. The ceramics were structurally investigated and with the help of ferroelectric P-E hysteresis loop, coercive field was determined. This study deals with the identification of optimum poling conditions and their effect on the piezoelectric and dielectric properties mechanically synthesized PLZT 8/60/40 ceramics. Different combinations of poling parameters were used to measure the values of dielectric constant, dielectric loss, piezoelectric charge (d 33 ) and electromechanical coupling coefficients (k p ). These values show that a ferroelectric material can be poled at ∼5 kV/cm (>0.5E c ), contrary to common practice of poling far above the coercive field. The effect of aging on the electrical properties was also studied for ceramics poled at 0.6E c and 3E c . With the help of this study, poling electric field as well as another two important poling parameters, viz poling temperature and poling time, were optimized. Optimum poling temperature was found to be in the range of 75 °C to 125 °C with optimal poling time of 30 min. Additionally the effect of ceramic sample thickness on the said properties was also studied. The maximum d 33 and k p values for PLZT ceramics was found to be ∼715 pC/N and ∼77%, respectively. Copyright EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg 2015

Suggested Citation

  • Ajeet Kumar & V. Bhanu Prasad & K. James Raju & A. James, 2015. "Optimization of poling parameters of mechanically processed PLZT 8/60/40 ceramics based on dielectric and piezoelectric studies," The European Physical Journal B: Condensed Matter and Complex Systems, Springer;EDP Sciences, vol. 88(11), pages 1-9, November.
    • Handle: RePEc:spr:eurphb:v:88:y:2015:i:11:p:1-9:10.1140/epjb/e2015-60414-9
    DOI: 10.1140/epjb/e2015-60414-9
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    Cited by:

    1. Ajeet Kumar & Sivanagi Reddy Emani & K. C. James Raju & Jungho Ryu & A. R. James, 2020. "Investigation of the Effects of Reduced Sintering Temperature on Dielectric, Ferroelectric and Energy Storage Properties of Microwave-Sintered PLZT 8/60/40 Ceramics," Energies, MDPI, vol. 13(23), pages 1-17, December.

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