Dynamic behaviors of spin-1/2 bilayer system within Glauber-type stochastic dynamics based on the effective-field theory

ERTAŞ M., Kantar E., KESKİN M.

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, vol.358, pp.56-64, 2014 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 358
  • Publication Date: 2014
  • Doi Number: 10.1016/j.jmmm.2014.01.025
  • Journal Name: JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.56-64
  • Keywords: Kinetic spin-1/2 bilayer system, Effective-field theory, Dynamic phase transition, Dynamic phase diagram, ISING THIN-FILMS, MAGNETIC-PROPERTIES, PHASE-TRANSITIONS, OSCILLATING FIELD, MODEL, LATTICE, TEMPERATURE, POINTS, FE/NI
  • Erciyes University Affiliated: Yes

Abstract

The dynamic phase transitions (DPTs) and dynamic phase diagrams of the kinetic spin-1/2 bilayer system in the presence of a time-dependent oscillating external magnetic field are studied by using Glauber-type stochastic dynamics based on the effective-field theory with correlations for the ferromagnetic/ferromagnetic (FM/FM), antiferromagnetic/ferromagnetic (AFM/FM) and antiferromagnetic/antiferromagnetic (AFM/AFM) interactions. The time variations of average magnetizations and the temperature dependence of the dynamic magnetizations are investigated. The dynamic phase diagrams for the amplitude of the oscillating field versus temperature were presented. The results are compared with the results of the same system within Glauber-type stochastic dynamics based on the mean-field theory. (C) 2014 Elsevier B.V. All rights reserved.