• Fulltext

       

        Click here to view fulltext PDF


      Permanent link:
      https://www.ias.ac.in/article/fulltext/boms/020/04/0481-0489

    • Keywords

       

      Structural transition in YBCO; Kawasaki kinetics; oxygen diffusion; phase ordering

    • Abstract

       

      Monte-Carlo simulations are described using the Kawasaki model of oxygen (dis)ordering in the basal plane of YBa2Cu3O7−δ(YBCO). In this model the presence or absence of an interstitial oxygen defect is mapped into a pseudo Ising spins=+1 or − 1. We study the rate law and the relaxation time of the order parameter and most importantly, the diffusion of oxygen in the basal plane across the structural phase transition in this system. In a separate investigation we have carried out numerical analysis of a mean-field dynamical model (with Kawasaki kinetics) to examine phase ordering dynamics and pattern formation, for δ=0.

    • Author Affiliations

       

      S Dattagupta1 S K Ghoshal1

      1. School of Physical Sciences, Jawaharlal Nehru University, New Delhi - 110 067, India
    • Dates

       
  • Bulletin of Materials Science | 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.