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    • Structural, electrical and reflectance studies of the system ZnMn2-2xNixTixO4

      B A Mulla V S Darshane

      Physical and Theoretical Volume 92 Issue 2 April 1983 pp 139-145

    • Fulltext

       

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      Permanent link:
      https://www.ias.ac.in/article/fulltext/jcsc/092/02/0139-0145

    • Keywords

       

      Spinel; x-ray; electrical conductivity; Seebeck coefficient; reflectance spectra

    • Abstract

       

      X-ray, electrical conductivity and reflectance studies of the system ZnMn2-2xNixTixO4 have been carried out. The system is tetragonal in the range 0 ≤x ≤ 0.25 and cubic in the range 0.5 ≤x ≤ 1. Electrical resistivity temperature behaviour obeys Wilson’s law for all the compounds and the thermoelectric coefficient values vary between 325 and-290 μV/K. The activation energy and pRT decrease gradually with increase in concentration of charge carriers atB-site except for ZnNiTiO4. Reflectance spectral studies indicate the presence of Ni2+ at the octahedral site.

    • Author Affiliations

       

      B A Mulla1 V S Darshane1

      1. Chemistry Department, Institute of Science, Bombay - 400032, India

    • Dates

       
      Published
      April 1983
      Manuscript received
      6 September 1982
      Manuscript revised
      24 February 1983

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