• K B Athreya

      Articles written in Pramana – Journal of Physics

    • A three dimensional ferromagnetic Ising ‘fluid’ model

      N Kumar K B Athreya

      More Details Abstract Fulltext PDF

      The three dimensional ferromagnetic spin-half Ising model with an arbitrary external magnetic field is considered in the spatial continuum limit and under a certain tempering condition to be imposed on the pair-wise spin-spin interaction. An expression for the partition function has been obtained for a tempered RKKY type interaction. The solution predicts the classical mean-field behaviour above a critical temperature below which the spontaneous magnetization jumps discontinuously from zero to the saturation value.

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