Phase diagrams of the FCC Blume-Emery-Griffiths model on a cellular automaton

被引:6
|
作者
Oezkan, A. [1 ]
Kutlu, B. [2 ]
机构
[1] Gazi Univ, Fen Bilimleri Enstitusu Fizik Anabilim Dali, Ankara, Turkey
[2] Gazi Univ, Fen Edebiyat Fak Fizik Bolumu, TR-06500 Ankara, Turkey
来源
关键词
spin-1 Ising (BEG) model; critical end point; bicritical point; tricritical point; Creutz cellular automaton; phase diagram; face-centered-cubic lattice;
D O I
10.1142/S012918310701142X
中图分类号
TP39 [计算机的应用];
学科分类号
081203 ; 0835 ;
摘要
The spin-1 Ising (BEG) model has been simulated on a cellular automaton improved from the Creutz cellular automaton (CCA) for a face-centered cubic lattice. The simulations have been made in the 0 <= d = D/J <= 7 and -1.25 < k = KIJ <= 0 parameter region. In this region, the ground state diagram (k, d) has ferromagnetic and perfect zero ordering regions. The ferromagnetic ordering region separates into four regions which exhibit different phase transition types as the first order, the second order, the reentrant, the double-reentrant and the successive phase transitions. The simulation results show that the model has the tricritical points, the critical end points and the bicritical points on the (kT(C)/zJ, d) and (kT(C)/zJ, k) planes as indicated by the Mean Field approximation results.
引用
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页码:1417 / 1427
页数:11
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