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      Permanent link:
      https://www.ias.ac.in/article/fulltext/boms/022/01/0059-0064

    • Keywords

       

      Pyroelectricity; ferroelectricity; dielectric constant; loss tangent; conductivity

    • Abstract

       

      Pyroelectric properties of bismuth layer structured calcium substituted sodium bismuth titanate (Na0·5Bi0·5)1−xCaxBi4Ti4O15 withx=0 (NBT) andx=0·1 (0·1 NCBT) were studied by measuring the current under short circuit condition. Spontaneous polarization and figures of merit were evaluated from the measured values of pyroelectric coefficients, dielectric constant and loss tangent. The pyroelectric properties were studied in poled and short circuit condition from 30°C to 700°C. The results obtained were discussed in the light of dielectric and conductivity properties of the samples.

    • Author Affiliations

       

      P S Rama Sastry1 G S Kumar1 T Bhimasankaram1 G Prasad1

      1. Department of Physics, Osmania University, Hyderabad - 500 007, India

    • Dates

       
      Published
      February 1999
      Manuscript received
      12 June 1998
      Manuscript revised
      7 December 1998

  • Bulletin of Materials Science | News

    • Dr Shanti Swarup Bhatnagar for Science and Technology

      Posted on October 12, 2020

      Prof. Subi Jacob George — Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru
      Chemical Sciences 2020

      Prof. Surajit Dhara — School of Physics, University of Hyderabad, Hyderabad
      Physical Sciences 2020

    • Editorial Note on Continuous Article Publication

      Posted on July 25, 2019

      Click here for Editorial Note on CAP Mode

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