• A neutron diffraction study of ferroelectric PbHAsO4 at room temperature

    • Fulltext

       

        Click here to view fulltext PDF


      Permanent link:
      https://www.ias.ac.in/article/fulltext/pram/018/04/0325-0330

    • Keywords

       

      Neutron diffraction; ferroelectric properties; Structural phase transition; least-squares refinement; disordered hydrogen; isomorphous

    • Abstract

       

      A single-crystal neutron-diffraction structural study of PbHAsO4 in its ferroelectric phase at room temperature (24°C) is presented as part of an investigation of a family of monetites. The crystal structure of PbHAsO4, and its phase transition mechanism are discussed. Comparison of the crystal structures of PbHPO4 and PbHAsO4 reveals that these two ferroelectrics are isomorphous. The role of protons in structural phase transition of PbHAsO4 is also discussed.

    • Author Affiliations

       

      R N P Choudhary1 2

      1. Department of Physics, University of Edinburgh, Mayfield Road, Edinburgh - EH9 3JZ, UK
      2. Department of Physics, Indian Institute of Technology, Kharagpur - 721 302, India
    • Dates

       
  • Pramana – Journal of Physics | News

    • Editorial Note on Continuous Article Publication

      Posted on July 25, 2019

      Click here for Editorial Note on CAP Mode

© 2017-2019 Indian Academy of Sciences, Bengaluru.