Time dependent magnetic field effects on the +/- J Ising model

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VATANSEVER E., AKINCI Ü., POLAT H.

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, cilt.344, ss.89-95, 2013 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 344
  • Basım Tarihi: 2013
  • Doi Numarası: 10.1016/j.jmmm.2013.05.025
  • Dergi Adı: JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.89-95
  • Anahtar Kelimeler: Dynamic phase transition, Quenched random bond +/- J Ising model, Effective-field theory, CRITICAL PERCOLATION PROBABILITIES, RENORMALIZATION-GROUP CALCULATIONS, FERROMAGNETIC PHASE BREAKDOWN, DYNAMIC HYSTERESIS, EPITAXIAL FE/GAAS(001), SQUARE-LATTICE, MONTE-CARLO, SPIN-GLASS, BOND, SITE
  • Dokuz Eylül Üniversitesi Adresli: Evet

Özet

Nonequilibrium phase transition properties of the +/-J Ising model under a time dependent oscillating perturbation are investigated within the framework of effective field theory for a two-dimensional square lattice. After a detailed analysis, it is found that the studied system exhibits unusual and interesting behaviors such as reentrant phenomena, and the competition between ferromagnetic and antiferromagnetic exchange interactions gives rise to destruct the dynamic first order phase transitions as well as dynamic tricritical points. Furthermore, according to Neel nomenclature, the magnetization profiles have been found to obey Q-type, L-type and P-type classification schemes under certain conditions. Finally, it is observed that the treatment of critical percolation with applied field amplitude strongly depends upon the frequency of time varying external field. Crown Copyright (C) 2013 Published by Elsevier B.V. All rights reserved.