Finite-size-scaling study of the two-dimensional spin-1 model with positive biquadratic interaction

Authors
Badehdah, M Bekhechi, S Benyoussef, A Touzani, M
Citation
M. Badehdah et al., Finite-size-scaling study of the two-dimensional spin-1 model with positive biquadratic interaction, J MAGN MAGN, 204(3), 1999, pp. 209-214
Citations number
19
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
ISSN journal
03048853 → ACNP
Volume
204
Issue
3
Year of publication
1999
Pages
209 - 214
Database
ISI
SICI code
0304-8853(199909)204:3<209:FSOTTS>2.0.ZU;2-L
Abstract
A two-dimensional antiferromagnetic spin-1 Ising model with positive biquad ratic interaction is investigated by finite-size-scaling based on transfer matrix (TMFSS) calculations. At finite temperatures we obtain a quite rich phase diagram, with several multicritical points. We confirm the existence of the intermediate phase observed in previous work for some values of J/K and D/K. For certain range of interaction parameters, the model is shown to violate the ordinary universality hypothesis. (C) 1999 Elsevier Science B. V. All rights reserved.