Kinetics of a mixed spin-1/2 and spin-3/2 Ising ferrimagnetic model

被引:59
作者
Deviren, Bayram [2 ]
Keskin, Mustafa [1 ]
Canko, Osman [1 ]
机构
[1] Erciyes Univ, Dept Phys, TR-38039 Kayseri, Turkey
[2] Erciyes Univ, Inst Sci, TR-38039 Kayseri, Turkey
关键词
Mixed spin-1/2 and spin-3/2 Ising ferrimagnetic model; Glauber-type stochastic dynamics; Dynamic phase transition; Phase diagrams; EMERY-GRIFFITHS MODEL; MAGNETIC-PROPERTIES; TRICRITICAL POINT; PHASE-TRANSITIONS; CRITICAL-BEHAVIOR; BETHE LATTICE; SYSTEM;
D O I
10.1016/j.jmmm.2008.10.006
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
We present a study, within a mean-field approach, of the kinetics of a mixed ferrimagnetic model on a square lattice in which two interpenetrating square sublattices have spins that can take two values, sigma = +/- 1/2, alternated with spins that can take the four values, S = +/- 3/2, +/- 1/2. We use the Glauber-type stochastic dynamics to describe the time evolution of the system with a crystal-field interaction in the presence of a time-dependent oscillating external magnetic field. The nature (continuous and discontinuous) of transition is characterized by studying the thermal behaviors of average order parameters in a period. The dynamic phase transition points are obtained and the phase diagrams are presented in the reduced magnetic field amplitude (h) and reduced temperature ( T) plane, and in the reduced temperature and interaction parameter planes, namely in the (h, T) and (d, T) planes, d is the reduced crystal-field interaction. The phase diagrams always exhibit a tricritical point in ( h, T) plane, but do not exhibit in the (d, T) plane for low values of h. The dynamic multicritical point or dynamic critical end point exist in the (d, T) plane for low values of h. Moreover, phase diagrams contain paramagnetic (p), ferromagnetic (f), ferrimagnetic (i) phases, two coexistence or mixed phase regions, (f + p) and (i + p), that strongly depend on interaction parameters. (c) 2008 Elsevier B. V. All rights reserved.
引用
收藏
页码:458 / 466
页数:9
相关论文
共 43 条
[1]   Nonequilibrium phase transition in the kinetic Ising model: Existence of a tricritical point and stochastic resonance [J].
Acharyya, M .
PHYSICAL REVIEW E, 1999, 59 (01) :218-221
[2]  
Acharyya M, 2008, COMMUN COMPUT PHYS, V3, P397
[3]   The spin-3/2 Blume-Capel model on the Bethe lattice using the recursion method [J].
Albayrak, E ;
Keskin, M .
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2000, 218 (01) :121-127
[4]   PHASE-TRANSITIONS IN THE SPIN-3/2 BLUME-EMERY-GRIFFITHS MODEL [J].
BAKCHICH, A ;
BASSIR, A ;
BENYOUSSEF, A .
PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS, 1993, 195 (1-2) :188-196
[5]   Position-space renormalization-group investigation of the spin-3/2 Blume-Emery-Giffiths model with repulsive biquadratic coupling [J].
Bakchich, A ;
El Bouziani, M .
JOURNAL OF PHYSICS-CONDENSED MATTER, 2001, 13 (01) :91-99
[6]   PHASE-TRANSITIONS IN THE SPIN-3/2 BEG MODEL [J].
BARRETO, FCS ;
BONFIM, OFD .
PHYSICA A, 1991, 172 (03) :378-390
[7]  
Benayad N, 1996, ANN PHYS-LEIPZIG, V5, P387
[8]   Magnetic properties of a mixed spin-1/2 and spin-3/2 transverse Ising model [J].
Benayad, N ;
Dakhama, A ;
Klumper, A ;
Zittartz, J .
ZEITSCHRIFT FUR PHYSIK B-CONDENSED MATTER, 1996, 101 (04) :623-630
[9]   Ferrimagnetism in diluted mixed spin-1/2 and spin-3/2 Ising systems [J].
Bobak, A ;
Jurcisin, M .
JOURNAL DE PHYSIQUE IV, 1997, 7 (C1) :179-180
[10]   Ferrimagnetism in diluted mixed-spin two-dimensional ising models [J].
Bobak, A ;
Jurcisin, M .
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1996, 163 (03) :292-298