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A Monte Carlo study of the spin-1 Blume–Emery–Griffiths phase diagrams within biquadratic exchange anisotropy

Author

Listed:
  • Dani, Ibtissam
  • Tahiri, Najim
  • Ez-Zahraouy, Hamid
  • Benyoussef, Abdelilah

Abstract

The effect of the bi-quadratic exchange coupling anisotropy on the phase diagram of the spin-1 Blume–Emery–Griffiths model on simple-cubic lattice is investigated using mean field theory (MFT) and Monte Carlo simulation (MC). It is found that the anisotropy of the biquadratic coupling favors the stability of the ferromagnetic phase. By decreasing the parallel and/or perpendicular bi-quadratic coupling, the ferrimagnetic and the antiquadrupolar phases broaden in contrast, the ferromagnetic and the disordered phases become narrow. The behavior of magnetization and quadrupolar moment as a function of temperature is also computed, especially in the ferrimagnetic phase.

Suggested Citation

  • Dani, Ibtissam & Tahiri, Najim & Ez-Zahraouy, Hamid & Benyoussef, Abdelilah, 2014. "A Monte Carlo study of the spin-1 Blume–Emery–Griffiths phase diagrams within biquadratic exchange anisotropy," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 407(C), pages 295-302.
    • Handle: RePEc:eee:phsmap:v:407:y:2014:i:c:p:295-302
    DOI: 10.1016/j.physa.2014.04.006
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