𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Multicritical behavior of the antiferromagnetic Blume–Emery–Griffiths model

✍ Scribed by Mustafa Keskin; M. Ali Pınar; Ahmet Erdinç; Osman Canko

Publisher
Elsevier Science
Year
2006
Tongue
English
Weight
275 KB
Volume
364
Category
Article
ISSN
0378-4371

No coin nor oath required. For personal study only.

✦ Synopsis

The multicritical behavior of the antiferromagnetic spin-3 2 Blume-Emery-Griffiths model in an external magnetic field is studied within the lowest approximation of the cluster variation method. We have investigated the thermal variations of order parameters for different values of interaction parameters and external magnetic field and constructed the resulting phase diagrams. The model exhibits distinct critical regions, including the first-order, second-order tricritical point, double critical point and zero critical point. Comparison of the phase diagrams with closely related systems is made.

📜 SIMILAR VOLUMES

The spin-32 Blume-Emery-Griffiths model
The spin-32 Blume-Emery-Griffiths model
✍ A. Bakkali; M. Kerouad; M. Saber 📂 Article 📅 1996 🏛 Elsevier Science 🌐 English ⚖ 457 KB

The spin -3 Blume-Emery Griffiths model is studied using the effective field theory based on the use of a probability distribution that correctly accounts for the single site kinematic relations. The phase diagrams of the model on a square lattice are obtained.

Blume-Emery-Griffiths model on the squar
Blume-Emery-Griffiths model on the square lattice with repulsive biquadratic coupling
✍ N.S. Branco 📂 Article 📅 1996 🏛 Elsevier Science 🌐 English ⚖ 463 KB

Using a real-space renormalization group procedure with no adjustable parameters, we investigate the Blume-Emery-Griffiths model on the square lattice. The formalism respects sublattice symmetry, allowing the study of both signs of K, the biquadratic exchange coupling. Our results for K > 0 are comp