Hysteretic response characteristics and dynamic phase transition via site dilution in the kinetic Ising model

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Aktas B. O., AKINCI Ü., Polat H.

PHYSICA B-CONDENSED MATTER, cilt.407, sa.24, ss.4721-4730, 2012 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 407 Sayı: 24
  • Basım Tarihi: 2012
  • Doi Numarası: 10.1016/j.physb.2012.08.036
  • Dergi Adı: PHYSICA B-CONDENSED MATTER
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.4721-4730
  • Anahtar Kelimeler: Dynamic phase transition, Site dilution, Magnetic hysteresis, Effective field theory, EFFECTIVE-FIELD-THEORY, SPIN SYSTEMS, MAGNETIC HYSTERESIS, OSCILLATING FIELD, MONTE-CARLO, MEAN-FIELD, FILMS, FERROMAGNETS, RELAXATION, SURFACE
  • Dokuz Eylül Üniversitesi Adresli: Evet

Özet

The decay of the hysteresis loop area of the system, which is obeying a site diluted kinetic Ising model, is considered by the disorder parameter using the effective field theory analysis. The exhibition focuses on the understanding of external field frequency, amplitude and the site concentration dependency of the hysteresis loop area for several powerful treatments. Important characteristics of the hysteretic response, such as frequency dispersion, effect of domain nucleation phenomenon on the dynamic process, etc., has been introduced together with well known other characteristics. An attempt has been made to explain the relations between the competing time scales (intrinsic microscopic relaxation time of the system and the time period of the external oscillatory field) and the shape of the response. As a result of the detailed investigations, existence of essentially three, particularly four types of dispersion curves have been propounded. (C) 2012 Elsevier B.V. All rights reserved.