Magnetic lattice gas of molecules with internal structure

M. Dudek and A. Pȩkalski

Physica A: Statistical Mechanics and its Applications, 1984, vol. 126, issue 3, 504-519

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.

Date: 1984
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:126:y:1984:i:3:p:504-519

DOI: 10.1016/0378-4371(84)90215-2

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