Bulletin of Materials Science

, Volume 2, Issue 3, pp 201–206 | Cite as

Solid state studies on rare earth mixed oxide pyrochlores Er2(V1−x Fe x )4/3 W2/3O7

  • M A Subramanian
  • G Aravamudan
  • G V Subba Rao


Complete series of solid solutions exist in the mixed oxide pyrochlore system, Er 2 3+ (V 1−x 3+ Fe x 3+ )4/3 W 2 3/6+ O7, with the crystal structure changing from cubic to rhombohedral atx=0·25. The compounds are semiconductors at 300 K exhibitingp- orn-type behaviour depending on the value ofx. The observed resistivity and Seebeck coefficient data as a function of temperature have been interpreted in terms of a hopping mechanism.


Mixed pyrochlores electrical properties mechanism of conduction 


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Copyright information

© Indian Academy of Sciences 1980

Authors and Affiliations

  • M A Subramanian
    • 1
  • G Aravamudan
    • 1
  • G V Subba Rao
    • 1
  1. 1.Materials Science Research CentreIndian Institute of TechnologyMadrasIndia

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