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Magnetic lattice gas of molecules with internal structure

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  • Dudek, M.
  • Pȩkalski, A.

Abstract

A model of a lattice gas is considered in which molecules interact via three kinds of forces: short-ranged intra-molecular magnetic (producing a net magnetic moment per particle), long-ranged magnetic between those moments and finally long-ranged non-magnetic. Using the molecular field approximation for both kinds of the long-ranged forces and calculating exactly the contribution from the short-ranged interactions, we construct and discuss phase diagrams for the system. We show that the location of the (multi-) critical points is quite sensitive to the strength and/or sign of the intra-molecular interaction, as well as to the form of the molecules.

Suggested Citation

  • Dudek, M. & Pȩkalski, A., 1984. "Magnetic lattice gas of molecules with internal structure," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 126(3), pages 504-519.
    • Handle: RePEc:eee:phsmap:v:126:y:1984:i:3:p:504-519
    DOI: 10.1016/0378-4371(84)90215-2
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