TRICRITICAL BEHAVIOR IN DILUTED MIXED SPIN-1 AND SPIN-1 2 ON SQUARE LATTICE/

Authors
BENYOUSSEF A ELKENZ A KANEYOSHI T
Citation
A. Benyoussef et al., TRICRITICAL BEHAVIOR IN DILUTED MIXED SPIN-1 AND SPIN-1 2 ON SQUARE LATTICE/, Journal of magnetism and magnetic materials, 131(1-2), 1994, pp. 179-182
Citations number
14
Categorie Soggetti
Material Science","Physics, Condensed Matter
Journal title
Journal of magnetism and magnetic materials → ACNP
ISSN journal
03048853
Volume
131
Issue
1-2
Year of publication
1994
Pages
179 - 182
Database
ISI
SICI code
0304-8853(1994)131:1-2<179:TBIDMS>2.0.ZU;2-0
Abstract
An effective-field theory with correlations is developed for a diluted mixed sping-1/2 and spin-1 Ising ferromagnetic system with a crystal- field interaction D in a square lattice (Z = 4). The phase diagrams in temperature-concentration of magnetic atoms (p) and in temperature-cr ystal field interaction planes exhibit a variety of interesting phenom ena such as second order phase transitions, tricritical points and fir st order phase transitions. The reentrant phenomena are also observed.