Monte Carlo Study of a Spin-3/2 Blume-Emery-Griffiths Model on a Honeycomb Lattice

• Authors: M. Žukovič , M. Jaščur
• Languages of publication: EN

Abstracts

EN

We study the phase diagram of the spin-3/2 Blume-Emery-Griffiths model on a honeycomb lattice by Monte Carlo simulations in order to verify the presence of some peculiar features predicted by the effective field theory (EFT) with correlations. The locations of the order-disorder phase boundaries are estimated from thermal variations of the magnetic susceptibility curves. It is found that for positive values of the biquadratic interactions the critical boundary shows a discontinuous character as a function of the single-ion anisotropy strength, in line with the EFT expectations. However, for negative values of the biquadratic interactions the step-like variation of the critical frontier predicted by EFT was not reproduced.

Keywords

EN

05.50.+q; 64.60.De; 75.10.Hk; 75.30.Kz; 75.50.Lk

Discipline

• 75.10.Hk: Classical spin models
• 64.60.De: Statistical mechanics of model systems (Ising model, Potts model, field-theory models, Monte Carlo techniques, etc.)
• 75.50.Lk: Spin glasses and other random magnets
• 05.50.+q: Lattice theory and statistics (Ising, Potts, etc.)(see also 64.60.Cn Order-disorder transformations, and 75.10.Hk Classical spin models)
• 75.30.Kz: Magnetic phase boundaries (including classical and quantum magnetic transitions, metamagnetism, etc.)(for ferroelectric phase transitions, see 77.80.B-; for superconductivity phase diagrams, see 74.25.Dw)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2014
• Volume: 126
• Issue: 1
• Pages: 36-37

Dates

published

2014-07

Contributors

author

M. Žukovič

• Institute of Physics, Faculty of Sciences, P.J. Šafárik University, Park Angelinum 9, 041 54 Košice, Slovakia

author

M. Jaščur

• Institute of Physics, Faculty of Sciences, P.J. Šafárik University, Park Angelinum 9, 041 54 Košice, Slovakia

References

• [1] J. Sivardiere, M. Blume, Phys. Rev. B 5, 1126 (1972), doi: 10.1103/PhysRevB.5.1126
• [2] S. Krinsky, D. Mukamel, Phys. Rev. B 11, 399 (1975), doi: 10.1103/PhysRevB.11.399
• [3] F.C. SáBarreto, O.F. De Alcantara Bonfim, Physica A 172, 378 (1991), doi: 10.1016/0378-4371(91)90390-X
• [4] J.A. Plascak, J.G. Moreira, F.C. SáBarreto, Phys. Lett. A 173, 360 (1993), doi: 10.1016/0375-9601(93)90250-4
• [5] T. Kaneyoshi, M. Jaščur, Phys. Lett. A 177, 172 (1993), doi: 10.1016/0375-9601(93)90530-D
• [6] A. Bakkali, M. Kerouad, M. Saber, Physica A 229, 563 (1996), doi: 10.1016/0378-4371(96)00035-0

Identifiers

DOI

10.12693/APhysPolA.126.36