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    • Fulltext

       

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      Permanent link:
      https://www.ias.ac.in/article/fulltext/boms/040/01/0247-0251

    • Keywords

       

      XRD; Zn$_{1−x}$Ca$_x$O; impedance spectroscopy.

    • Abstract

       

      The electrical properties of Zn$_{1−x}$Ca$_x$O ($x = 0, 0.01$, 0.02 and 0.03) nanoceramics synthesized by solidstate reactionmethod were investigated by complex impedance spectroscopy (CIS) from room temperature to 500$^{\circ}$C. Structural analysis of the synthesized material using the X-ray diffraction technique suggests that they exhibit a single phase with hexagonal wurtzite structure. Experimental results indicate that the synthesized material shows temperature-dependent relaxation phenomena. The variation of frequency exponent ($s$) with temperature shows the presence of thermally activated polarization mechanism in the synthesized sample. Dielectric constant was found to decrease with increase in frequency and temperature for Ca-doped samples. Ca-doped ZnO sample shows dielectric loss at lower temperature than that of pure ZnO.

    • Author Affiliations

       

      TANUSHREE DAS1 BIKRAM KESHARI DAS1 S K S PARASHAR1 KAJAL PARASHAR1

      1. School of Applied Sciences, Nanosensor Lab, KIIT University, Bhubaneswar 751024, India

    • Dates

       
      Published
      15 February 2017
      Manuscript received
      1 April 2016
      Accepted
      10 June 2016

  • Bulletin of Materials Science | News

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      Prof. Surajit Dhara — School of Physics, University of Hyderabad, Hyderabad
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    • Editorial Note on Continuous Article Publication

      Posted on July 25, 2019

      Click here for Editorial Note on CAP Mode

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