±J Blume–Capel Model with external magnetic field in the cluster variation method

2021 ◽  
Vol 575 ◽  
pp. 126054
Author(s):  
Erhan Albayrak
Keyword(s):  
Magnetic Field ◽  
External Magnetic Field ◽  
Cluster Variation Method ◽  
Variation Method ◽  
Cluster Variation

Critical Behaviour of the Ferromagnetic Spin-3/2 – Blume-Emery-Griffiths Model with Repulsive Biquadratic Coupling

2007 ◽  
Vol 62 (3-4) ◽  
pp. 127-139 ◽  
Author(s):  
M. Ali Pınar ◽  
Mustafa Keskin ◽  
Ahmet Erdinç ◽  
Osman Canko
Keyword(s):  
Magnetic Field ◽  
External Magnetic Field ◽  
Phase Diagrams ◽  
Mean Field ◽  
Cluster Variation Method ◽  
Field Approximation ◽  
Critical Behaviour ◽  
Mean Field Approximation ◽  
Variation Method ◽  
Cluster Variation

The critical behaviour of the ferromagnetic spin-3/2 Blume-Emery-Griffiths model with repulsive biquadratic coupling in the absence and presence of an external magnetic field is studied by using the lowest approximation of the cluster variation method, which is identical with the mean-field approximation. Thermal variations of the order parameters are investigated for different values of the interaction parameters and the external magnetic field. The complete phase diagrams of the system are calculated in the (kT/J,K/J), (kT/J,D/J) and (kT /J,H/J) planes. Five new phase diagram topologies are obtained, which are either absent from previous approaches or have gone unnoticed. A detailed discussion and comparison of the phase diagrams is made.

Thermodynamics of dilute binary solid solutions using the cluster variation method

2012 ◽  
Vol 103 (10) ◽  
pp. 1188-1200 ◽  
Author(s):  
Bandikatla N. Sarma ◽  
Shreyansh N. Shah ◽  
Manoj Kumar ◽  
Shrikant Lele
Keyword(s):  
Solid Solutions ◽  
Cluster Variation Method ◽  
Variation Method ◽  
Cluster Variation

The description of Al, Si ordering in aluminosilicates using the cluster variation method

1999 ◽  
Vol 84 (3) ◽  
pp. 311-324 ◽  
Author(s):  
Victor L. Vinograd ◽  
Andrew Putnis
Keyword(s):  
Cluster Variation Method ◽  
Variation Method ◽  
Cluster Variation

General Algorithm for the Cluster-Variation Method

1983 ◽  
Vol 28 (5) ◽  
pp. 565-568 ◽  
Author(s):  
J S Desjardins ◽  
O Steinsvoll
Keyword(s):  
Cluster Variation Method ◽  
General Algorithm ◽  
Variation Method ◽  
Cluster Variation
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