Nonequilibrium dynamics of a mixed spin-1/2 and spin-3/2 Ising ferrimagnetic system with a time dependent oscillating magnetic field source

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS

卷:392

Article

Vatansever, Erol¹  Polat, Hamza² 

[1] Dokuz Eylul Univ, Grad Sch Nat & Appl Sci, TR-35160 Izmir, Turkey

[2] Dokuz Eylul Univ, Dept Phys, TR-35160 Izmir, Turkey

关键词: Lattice theory;    Phase transitions in Statistical Mechanics and Thermodynamics;    Dynamic critical behavior;    Ferrimagnetics;   

DOI  :  10.1016/j.jmmm.2015.05.001

来源: Elsevier

【 摘 要 】

Nonequilibrium phase transition properties of a mixed Ising ferrimagnetic model consisting of spin-1/2 and spin-3/2 on a square lattice under the existence of a tune dependent oscillating magnetic held have been investigated by making use of Monte Carlo simulations with a single-spin flip Metropolis algorithm. A complete picture of dynamic phase boundary and magnetization profiles have been illustrated and the conditions of a dynamic compensation behavior have been discussed in detail. According to our simulation results, the considered system does not point out a dynamic compensation behavior, when it only includes the nearest-neighbor interaction, single-ion anisotropy and an oscillating magnetic held source. As the next-nearest-neighbor interaction between the spins-1/2 rakes into account and exceeds a characteristic value which sensitively depends upon values of single-ion anisotropy and only of amplitude of external magnetic held, a dynamic compensation behavior occurs in the system. Finally, it is reported that it has not been found any evidence of dynamically first-order phase transition between dynamically ordered and disordered phases, which conflicts with the recently published molecular held investigation, for a wide range of selected system parameters. (C) 2015 Elsevier B.V. All rights reserved.

【 授权许可】

Free