Numerical study of the paraelectric-incommensurate- ferroelectric transition in the DIFFOUR model
Physics Department, Moscow State University - 119899 Moscow, Russia
2 Institute of Theoretical Physics, University of Nijmegen - Nijmegen, The Netherlands
Accepted: 15 November 2000
The classical 3D discrete frustrated (DIFFOUR) model is studied with Monte Carlo techniques. The phase diagram is topologically identical with that calculated in mean-field approximation, but the transition temperatures are different. This allows a comparison with experimental phase diagrams.
PACS: 64.70.Rh – Commensurate-incommensurate transitions / 64.60.Cn – Order-disorder transformations; statistical mechanics of model systems / 02.50.Ng – Distribution theory and Monte Carlo studies
© EDP Sciences, 2001