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

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    • Keywords


      d.c. conductivity; Nd+3 doping; activation energy; polaron hopping

    • Abstract


      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.

    • Author Affiliations


      S A Fadnavis1 2 A G Katpatal1

      1. Department of Applied Physics, VRCE, Nagpur - 440 011, India
      2. Department of Applied Physics, YCCE, Nagpur - 440 110, India
    • Dates

  • Bulletin of Materials Science | News

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      Posted on July 25, 2019

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