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  • Chem Sci Trans., 2016, 5(4),  pp 924-929  

    DOI:10.7598/cst2016.1283

    Research Article

    Study of Dielectric Constant and Loss Tangent of Rochelle Salt Crystal

  • BALKRISHNA KANDPAL* and TRILOK CHANDRA UPADHYAY
  • P.D.M. Institute of Engineering & Technology, Karsindhu (Safidon), Jind (Haryana) 126112, India
    Physics Department, H.N.B. Garhwal University (A Central University), Srinagar (Garhwal), Uttarakhand 246174, India
  • Abstract

    A two sub-lattice pseudospin-lattice coupled mode model along with third and fourth order phonon anharmonic interactions terms is considered for Rochelle salt. Double Time temperature dependent Green?s function method is used for development. Expression for shift, width, renormalized soft mode frequency, Curie temperature, dielectric constant and loss tangent have been derived. Model values of physical quantities are fitted. Theoretical results were compared with experimental results of literature, which show a good agreement

    Keywords

    Ferroelectrics, Soft mode, Green function, Anharmonic interactions

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