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    • Keywords


      Mixed pyrochlores; electrical properties; mechanism of conduction

    • Abstract


      Complete series of solid solutions exist in the mixed oxide pyrochlore system, Er23+ (V1−x3+ Fex3+)4/3 W23/6+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.

    • Author Affiliations


      M A Subramanian1 G Aravamudan1 G V Subba Rao1

      1. Materials Science Research Centre, Indian Institute of Technology, Madras - 600 036, India
    • Dates

  • Bulletin of Materials Science | News

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      Posted on July 25, 2019

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