Dynamic magnetic properties in the kinetic mixed spin-2 and spin-5/2 Ising model under a time-dependent magnetic field


ERTAŞ M. , KESKİN M. , Deviren B.

PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS, cilt.391, ss.1038-1047, 2012 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 391 Konu: 4
  • Basım Tarihi: 2012
  • Doi Numarası: 10.1016/j.physa.2011.10.030
  • Dergi Adı: PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS
  • Sayfa Sayıları: ss.1038-1047

Özet

We extend the recent paper [W. Jiang, V-C. Lo, B-D. Bai, J. Yang, Physica A 389 (2010) 2227-2233] to present a study, within a mean-field approach, the dynamic magnetic properties of the mixed spin-2 and spin-5/2 Ising ferrimagnetic system, which corresponds the molecular-based magnetic materials AFe(II) Fe-III(C2O4)(3) [A = N(n-CnH2n+1)(4), n = 3-5], by using the Glauber-type stochastic dynamics. This mixed Ising ferrimagnetic system is used on a layered honeycomb lattice in which Fe-II (S = 5/2) and Fe-III (sigma = 2) occupy sites. First, we investigate the time variations of average order parameters to find the phases in the system and then the thermal behavior of the dynamic order parameters to obtain the dynamic phase transition (DPT) points as well as to characterize the nature (first-or second-order) phase transitions. We also present the dynamic phase diagrams and study the dynamic magnetic hysteresis loop behaviors of the kinetic mixed spin-2 and spin-5/2 Ising ferrimagnetic system. The results are compared with some experimental and theoretical works and a good overall agreement is found., (C) 2011 Elsevier B.V. All rights reserved.