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X-ray, electrical conductivity and infrared studies of the system Zn1−x CO x Mn1−x Fe x CrO4

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Abstract

The system Zn1−x Co x Mn1−x Fe x CrO4 is tetragonal in the range 0.0⩽x⩽0.4 and cubic in the range 0.5⩽x⩽1. Electrical resistivity temperature behaviour obeys Wilson's law for all the compounds and thermoelectric coefficient values vary between 135 to 226μV K−1. All compounds exhibit P-type semiconductivity and possess low mobility values (10−9 cm2 V−1 sec−1). The infrared spectra show the presence of two strong absorption bands around 500 and 600 cm−1. The probable ionic configuration for the system is suggested to be Zn 2+1−x Fe −y3+x -Co 2+x [Mn 3+1−x Fe 3+y CO −y2+x Cr3+]O4.

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Authors and Affiliations

  1. Department of Physics, University of Bahrain, Bahrain

    M. N. Khan & Ashfaq Ahmed

  2. Department of Chemistry, Institute of Science, 400 032, Bombay, India

    V. S. Darshane

Authors
  1. M. N. Khan
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  2. Ashfaq Ahmed
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  3. V. S. Darshane
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Khan, M.N., Ahmed, A. & Darshane, V.S. X-ray, electrical conductivity and infrared studies of the system Zn1−x CO x Mn1−x Fe x CrO4 . J Mater Sci 24, 163–166 (1989). https://doi.org/10.1007/BF00660948

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  • DOI: https://doi.org/10.1007/BF00660948

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