Dynamic phase transitions of the Blume-Emery-Griffiths model under an oscillating external magnetic field by the path probability method

ERTAŞ M., KESKİN M.

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, cilt.377, ss.386-394, 2015 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 377
  • Basım Tarihi: 2015
  • Doi Numarası: 10.1016/j.jmmm.2014.10.153
  • Dergi Adı: JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.386-394
  • Anahtar Kelimeler: Blume-Emery-Griffiths model, Path probability method, Dynamic phase transitions, Dynamic phase diagrams, Glauber-type stochastic dynamics, Reentrant behavior, INCLUDING METASTABLE PHASES, CLUSTER VARIATION METHOD, ISING-MODEL, BEG MODEL, RENORMALIZATION-GROUP, HELIUM MIXTURES, RANGE ORDER, DIAGRAMS, RELAXATION, BEHAVIOR
  • Erciyes Üniversitesi Adresli: Evet

Özet

By using the path probability method (PPM) with point distribution, we study the dynamic phase transitions (DPTs) in the Blume-Emery-Griffiths (BEG) model under an oscillating external magnetic Field. The phases in the model are obtained by solving the dynamic equations for the average order parameters and a disordered phase, ordered phase and four mixed phases are found. We also investigate the thermal behavior of the dynamic order parameters to analyze the nature dynamic transitions as well as to obtain the DPT temperatures. The dynamic phase diagrams are presented in three different planes in which exhibit the dynamic tricritical point, double critical end point, critical end point, quadrupole point, triple point as well as the reentrant behavior, strongly depending on the values of the system parameters. We compare and discuss the dynamic phase diagrams with dynamic phase diagrams that were obtained within the Glauber-type stochastic dynamics based on the mean-field theory. (C) 2014 Elsevier B.V. All rights reserved.