Journal of Materials Science

, Volume 42, Issue 19, pp 8306–8310 | Cite as

Structural, dielectric and electrical properties of Te modified barium stannates using impedance analysis

  • Ashok KumarEmail author
  • R. N. P. Choudhary
  • B. P. Singh


Te modified barium stannates BaSn1−xTexO3 (x = 0–15 mol%) provides an interesting result (i.e., ferroelectric phase transition) above room temperature. As we increase concentration of Te, dielectric anomalies (dielectric constant and loss) increases but Curie temperature (Tc) shifted towards lower temperature side. Impedance analysis indicates the existence of both grain and grain boundary resistance nears the Curie temperature (∼225 °C–275 °C). At elevated temperature materials show a typically semiconducting nature (i.e., Negative temperature coefficient of resistance (NTCR)).


Curie Temperature TeO2 Negative Temperature Coefficient Ferroelectric Phase Transition Stannate 


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Copyright information

© Springer Science+Business Media, LLC 2007

Authors and Affiliations

  • Ashok Kumar
    • 1
    Email author
  • R. N. P. Choudhary
    • 2
  • B. P. Singh
    • 3
  1. 1.Department of Metallurgy and Materials EngineeringIndian Institute of TechnologyKharagpurIndia
  2. 2.Department of Physics and MeteorologyIndian Institute of TechnologyKharagpurIndia
  3. 3.Department of PhysicsT. M. Bhagalpur UniversityBhagalpurIndia

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