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      Permanent link:
      https://www.ias.ac.in/article/fulltext/boms/022/04/0751-0755

    • Keywords

       

      Mössbauer spectroscopy; X-ray powder analysis; crystal structure; Fe-substitution

    • Abstract

       

      The effect of doping iron at the yttrium site in hexagonal KCaY(PO4)2 is studied for various concentrations ofx (0≤x≤1), of iron using Mössbauer and X-ray diffraction methods. For low iron concentrations, very little changes in structure are seen but atx≈0·1, onset of new peaks in the XRD pattern is observed. The Mössbauer study of the doped samples reveals that iron has a solubility of up to 2·5% in the parent phase with any excess iron precipitating out to form a new and unknown phase. From a detailed analysis of the X-ray diffraction pattern (corresponding tox=1) of the latter phase, it is found that this phase is rhombohedral with the possible space groupR3.

    • Author Affiliations

       

      T N Sairam1 G V Narasimha Rao1 B Viswanathan1

      1. Materials Science Division, Indira Gandhi Centre for Atomic Research, Kalpakkam - 603 102, India

    • Dates

       
      Published
      June 1999
      Manuscript received
      18 December 1998

  • Bulletin of Materials Science | News

    • Dr Shanti Swarup Bhatnagar for Science and Technology

      Posted on October 12, 2020

      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
      Physical Sciences 2020

    • Editorial Note on Continuous Article Publication

      Posted on July 25, 2019

      Click here for Editorial Note on CAP Mode

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