The effect of competition between the frequency of the field and the frequency of the spin flipping on the kinetics of Ising metanlagnet

GÜLPINAR G., Demirhan D., Buyukkilic F.

PHYSICS LETTERS A, cilt.373, sa.5, ss.511-516, 2009 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 373 Sayı: 5
  • Basım Tarihi: 2009
  • Doi Numarası: 10.1016/j.physleta.2008.12.031
  • Dergi Adı: PHYSICS LETTERS A
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.511-516
  • Anahtar Kelimeler: Dynamical critical points, Kinetic Ising metamagnet, NONEQUILIBRIUM PHASE-TRANSITION, OSCILLATING MAGNETIC-FIELD, TRICRITICAL RELAXATION, METAMAGNETIC MODEL, HYSTERESIS LOOPS, DIAGRAM, DYNAMICS, POINT, RESONANCE, FILMS
  • Dokuz Eylül Üniversitesi Adresli: Evet

Özet

We consider the effect of a variable representing the competition between the frequency of the field and the frequency of the spin flipping (Omega) on the dynamics of the metamagnetic Ising model in a cubic lattice under the presence of a time varying (oscillating) external magnetic field. The system is modelled with a formalism of master equation at a mean-field level. The time averaged staggered magnetization (M(s)) acts as the order parameter and divides temperature field plane into three regions: anti-ferromagnetic, paramagnetic and coexistence of anti-ferromagnetic and paramagnetic phases. It is observed that the topology of the dynamical phase diagram depends strongly on Omega as well as the ratio between interlayer and intralayer couplings. (c) 2008 Elsevier B.V. All rights reserved.