Effective field investigation of dynamic phase transitions for site diluted Ising ferromagnets driven by a periodically oscillating magnetic field

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AKINCI Ü., YÜKSEL Y., VATANSEVER E., POLAT H.

PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS, cilt.391, sa.23, ss.5810-5817, 2012 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 391 Sayı: 23
  • Basım Tarihi: 2012
  • Doi Numarası: 10.1016/j.physa.2012.06.060
  • Dergi Adı: PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.5810-5817
  • Anahtar Kelimeler: Effective field theory, Dynamic phase transition, Dynamic phase diagrams, Quenched disorder, MODEL, HYSTERESIS, POINT
  • Dokuz Eylül Üniversitesi Adresli: Evet

Özet

Dynamic behavior of a site diluted Ising ferromagnet in the presence of a periodically oscillating magnetic field has been analyzed by means of the effective field theory (EFT). The dynamic equation of motion has been solved for a honeycomb lattice (z = 3) with the help of a Glauber type stochastic process. The global phase diagrams and the variation of the corresponding dynamic order parameter as a function of the Hamiltonian parameters and temperature has been investigated in detail and it has been shown that the system exhibits reentrant phenomena, as well as a dynamic tricritical point which disappears for sufficiently weak dilution. Crown Copyright (C) 2012 Published by Elsevier B.V. All rights reserved.