Phase Transitions in Confined Antiferromagnets

Details Phase Transitions in Confined Antiferromagnets Phase Transitions in Confined Antiferromagnets

2000-02-16

arxiv.org/abs/cond-mat/0002258v1

Physics

Condensed Matter

Materials Science

4 pages, 2 figures, Conference proceedings (SLAFES-XV), Phys. Stat. Sol.(b), in press

Scientific paper

Confinement effects on the phase transitions in antiferromagnets are studied as a function of the surface coupling v and the surface field h for bcc(110) films. Unusual topologies for the phase diagram are attained for particular combinations of v and h. It is shown that some of the characteristics of the finite-temperature behavior of the system are driven by its low-temperature properties and consequently can be explained in terms of a ground-state analysis. Cluster variation free energies are used for the investigation of the finite temperature behavior.

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