Dynamic phase transition in the kinetic spin-2 Blume-Emery-Griffiths model in an oscillating field


ERTAŞ M. , Canko O., KESKİN M.

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, cilt.320, ss.1765-1774, 2008 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 320 Konu: 11
  • Basım Tarihi: 2008
  • Doi Numarası: 10.1016/j.jmmm.2008.01.047
  • Dergi Adı: JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
  • Sayfa Sayıları: ss.1765-1774

Özet

We extend our recent paper [M. Keskin, O. Canko, M. Ertas, J. Exp. Theor. Phys. (Sov. Phys. JETP) 105 (2007) 1190.] to present a study, within a mean-field approach, the stationary states of the kinetic spin-2 Blume-Emery-Griffiths model in the presence of a time-dependent oscillating magnetic field by using the Glauber-type of stochastic dynamics. We found 20 fundamental types of dynamic phase diagrams where exhibit more complex and richer phase diagrams than our recent paper. Especially, the obtained dynamic phase diagrams show the dynamic triple, quadruple and dynamic double critical end points besides dynamic tricritical points that depending on interaction parameters. The phase diagrams also exhibit a disordered (d) and the ferromagnetic-2 (f(2)) phases, and the f(2) + d, f(2) + fq, fq + d, f(2) + f(1) + fq and f(2) + fq + d, where f(1) are fq the ferromagnetic-1 and ferroquadrupolar or simply quadrupolar phases respectively, coexistence phase regions that strongly depend on interaction parameters. (C) 2008 Elsevier B.V. All rights reserved.