• An explanation of the phenomenon of polytypism

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      https://www.ias.ac.in/article/fulltext/pram/023/06/0745-0749

    • Keywords

       

      Polytypism; Ising chain; anisotropic next nearest neighbour Ising model

    • Abstract

       

      Based on the analogy between polytypes and spin-half Ising chains, polytypes can be considered as different phases of a spin-half Ising system with competing nearest neighbour and next nearest neighbour interactions operating in a single direction. It is known that such an Ising system exhibits extremely rich and complicated phase behaviour. This behaviour is shown to be very similar to the phase behaviour exhibited by polytypes.

    • Author Affiliations

       

      S Ramasesha1

      1. Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore - 560 012, India
    • Dates

       
  • Pramana – Journal of Physics | News

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      Posted on July 25, 2019

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