Dynamic phase transition and dynamic phase diagrams in the spin-5/2 Blume-Capel model under a time-dependent oscillating external field

被引:11
作者
Deviren, Bayram [2 ,3 ]
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
[3] Nevsehir Univ, Dept Phys, TR-50300 Nevsehir, Turkey
关键词
spin-5; 2 Blume-Capel model; dynamic phase transition; dynamic phase diagrams; Glauber-type stochastic dynamics; EMERY-GRIFFITHS MODEL; KINETIC ISING-MODEL; HEISENBERG-ANTIFERROMAGNET; MIXED SPIN-1/2; DIPOLE;
D O I
10.1080/01411590903335538
中图分类号
O7 [晶体学];
学科分类号
0702 ; 070205 ; 0703 ; 080501 ;
摘要
We calculate the dynamic phase transition (DPT) temperatures and present the dynamic phase diagrams in the kinetic spin-5/2 Blume-Capel model under the presence of a time-dependent oscillating external magnetic field. First, we employ the Glauber transition rates to construct the mean-field dynamic equation. Then, we study the time variation of the average magnetization to find the phases in the system. We also investigate the behaviour of the dynamic magnetization to characterize the nature (continuous and discontinuous) of transition and to obtain the DPT points. We present the dynamic phase diagrams in two different planes. The phase diagrams include the ferromagnetic-5/2 (f5/2), the ferromagnetic-1/2 (f1/2) and paramagnetic (p) fundamental phases. In addition to these fundamental phases, we find 10 mixed phases, depending on the interaction parameters. The phase diagrams display many special points, such as a dynamic tricritical point, a double critical end point, a triple point and a quadruple point.
引用
收藏
页码:683 / 698
页数:16
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