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      https://www.ias.ac.in/article/fulltext/boms/016/04/0243-0253

    • Keywords

       

      EXAFS technique; cation distribution; spinels; X-ray diffraction data; spectrometer; average bond length; average coordination number

    • Abstract

       

      In oxidic spinels containing transition metal ions, the tetrahedral and octahedral bond distances differ by less than 0·25 Å. Therefore, in the case of a cation occupying both the sites, the normalized EXAFS for first coordination shell gives the average bond distance and average coordination number respectively over all the bonds and the positions of the cation under investigation. EXAFS analysis of fourteen mixed lithium ferrite spinels was carried out to show how the average bond distance can fruitfully be used to obtain the exact cation distribution, in conformity with X-ray diffraction data.

    • Author Affiliations

       

      G M Bhongale1 V B Sapre1 2 D K Kulkarni1

      1. Department of Physics, Institute of Science, Nagpur - 440 001, India
      2. Department of Physics, Nagpur University, Nagpur - 440 010, India
    • Dates

       
  • Bulletin of Materials Science | News

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