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    • Keywords


      Spinel; magnetic susceptibility; electrical resistivity; ionic configuration

    • Abstract


      A spinel CoMnAlO4 has been synthesised by the oxide method. It has a tetragonal structure withA=8.10 A andC=8.22 A. A break is found in the plot of logρ against 1/T at 573°K when activation energy changes from 0.62 eV to 0·52 eV. The electrical properties show that it can be regarded as a properly substituted CoMn2O4 by Al+3 ions. It is paramagnetic withCM = 4.72 and ϑa= −298°K. These results show the ionic configuration of the compound as Co+2 [Mn+3 Al+3]O4.

    • Author Affiliations


      S G Joshi1 D K Kulkarni1 P V Khandekar1

      1. Department of Physics, Institute of Science, Nagpur - 440 001, India
    • Dates

  • Bulletin of Materials Science | News

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      Prof. Subi Jacob George — Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru
      Chemical Sciences 2020

      Prof. Surajit Dhara — School of Physics, University of Hyderabad, Hyderabad
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      Posted on July 25, 2019

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