Dynamic phase transition in the kinetic spin-3/2 blume-emery-griffiths model: Phase diagram in the temperature and interaction parameters planes


Keskin M. , Deviren B., Canko O., KIRAK M.

ACTA PHYSICA POLONICA B, cilt.38, ss.2445-2457, 2007 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 38 Konu: 8
  • Basım Tarihi: 2007
  • Dergi Adı: ACTA PHYSICA POLONICA B
  • Sayfa Sayıları: ss.2445-2457

Özet

As a continuation of our previously published work, the dynamic phase transitions are studied, within a mean-field approach, in the kinetic spin-3/2 Blume-Emery-Griffiths (BEG) model in the presence of a time varying (sinusoidal) magnetic field by using the Glauber-type stochastic dynamics. The dynamic phase transitions (DPTs) are obtained and the phase diagrams are constructed in two different planes, namely reduced temperature (T) and biquadratic interaction (k), (T, k) plane where found seven fundamental types of phase diagrams for both positive and negative values of crystal-field interaction (d) and magnetic field amplitude (h), and also (T d) plane in which obtained ten distinct topologies for different values of k and h. Phase diagrams exhibit one or two dynamic tricritical points, a dynamic double critical end point, and besides a disordered and two ordered phases, seven coexistence phase regions exist in which occurring of all these strongly depend on the values of k, d and h.