• S A Fadnavis

      Articles written in Bulletin of Materials Science

    • Anomalous d.c. conductance in Nd+3-doped ferroelectric lead germanate single crystal

      S A Fadnavis A G Katpatal

      More Details Abstract Fulltext PDF

      Pure lead germanate (LG), 0·1 wt% Nd+3-doped lead germanate (LG.1Nd+3), 0·2wt% Nd+3-doped lead germanate (LG.2Nd+3) were grown by controlled cooling of melt. Variation of d.c. conductivity was studied in the temperature range 293°K–523°K. Conductivity increases with increasing temperature, showing semiconducting behaviour for all the compositions under study. The activation energy in ferroelectric phase is larger than in paraelectric phase for all the compositions. The result suggests polaron hopping to be a significant contributor to conduction mechanism.

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