ISING-LIKE MODEL FOR THE 2-STEP SPIN-CROSSOVER OF BINUCLEAR MOLECULES

Authors
BOUSSEKSOU A VARRET F NASSER J
Citation
A. Bousseksou et al., ISING-LIKE MODEL FOR THE 2-STEP SPIN-CROSSOVER OF BINUCLEAR MOLECULES, Journal de physique. I, 3(6), 1993, pp. 1463-1473
Citations number
16
Categorie Soggetti
Physics
Journal title
Journal de physique. I → ACNP
ISSN journal
11554304
Volume
3
Issue
6
Year of publication
1993
Pages
1463 - 1473
Database
ISI
SICI code
1155-4304(1993)3:6<1463:IMFT2S>2.0.ZU;2-F
Abstract
We present a two-sublattice Ising-type model, involving one intramolec ular interaction treated rigorously and intermolecular interactions tr eated in the mean-field approach, in order to describe the two-step tr ansition exhibited by a bi-nuclear spin-crossover complex. Spontaneous symmetry breakings can be obtained according to the relative values o f the interactions parameters. The phase diagram is given and the expe rimental data of [Fe(bt) (NCS)2]2bpym are treated in the present model .