PROPERTIES OF SMALL ANTIFERROMAGNETIC ISING CLUSTERS

Authors
VIITALA E MERIKOSKI J TIMONEN J MANNINEN M
Citation
E. Viitala et al., PROPERTIES OF SMALL ANTIFERROMAGNETIC ISING CLUSTERS, Zeitschrift fur Physik. D, Atoms, molecules and clusters, 40(1-4), 1997, pp. 173-176
Citations number
10
Categorie Soggetti
Physics, Atomic, Molecular & Chemical
Journal title
Zeitschrift fur Physik. D, Atoms, molecules and clusters → ACNP
ISSN journal
01787683
Volume
40
Issue
1-4
Year of publication
1997
Pages
173 - 176
Database
ISI
SICI code
0178-7683(1997)40:1-4<173:POSAIC>2.0.ZU;2-4
Abstract
Magnetic properties of small antiferromagnetic clusters have been stud ied by using the Ising model with nearest-neighbour interactions. The number of atoms in the clusters varied between 6 and 30. Several clust er geometries were analysed in detail with the result that there is no generic phase diagram. In an external magnetic field magnetisation ca n increase with increasing temperature in a considerable temperature r ange. Magnetisation was found to strongly depend on both the overall g eometry of the cluster and on the symmetry of the underlaying lattice structure.