• A R James

      Articles written in Bulletin of Materials Science

    • Studies on electrical conduction in Bi4SrTi4O15

      A R James G S Kumar T Bhimasankaram S V Suryanarayana

      More Details Abstract Fulltext PDF

      The ferroelectric Bi4SrTi4O15 has been synthesized and a study of the electrical (AC) conductivity was made on both poled and unpoled samples in the frequency range from 100 Hz to 1 MHz and from room temperature to 550°C. In the case of unpoled samples the activation energy was found to be 0·54 eV and subsequent to poling it was lowered to 0·39 eV indicating an increased conductivity after poling. Further the conductivity increased with increasing frequency and temperature. DC conductivity measurements were also carried out. Dielectric measurements indicate a peak in the dielectric constant at 530°C.

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