• Investigations on thermoelectric power of lanthanum oxide doped ferroelectric sodium vanadate

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      https://www.ias.ac.in/article/fulltext/pram/041/03/0233-0237

    • Keywords

       

      Ferroelectrics; thermoelectric power; Curie temperature

    • Abstract

       

      The thermoelectric power of ferroelectric sodium vanadate doped with different concentrations of lanthanum oxide has been measured in the temperature range covering their transition temperatures. It has been observed that the thermoelectric power increases with temperature, attains maximum value and with further increase in the temperature decreases to zero, indicating Curie temperature of the respective samples; however, it changes the sign for higher temperature. The thermoelectric power of sodium vanadate increases to maximum with increase in doping concentration of lanthanum oxide from 0.025 to 0.1 mol%; however, it decreases for higher concentrations. Pure as well as lanthanum oxide doped sodium vanadate samples showp-type behaviour in the ferroelectric region andn-type behaviour in the paraelectric region.

    • Author Affiliations

       

      D V Pawar1 T S Magdum1 S P Rasal1 S H Chavan1

      1. Ferroelectrics Laboratory, Department of Physics, Shivaji University, Kolhapur - 416 004, India
    • Dates

       
  • Pramana – Journal of Physics | News

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      Posted on July 25, 2019

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