Nonequilibrium behavior of the kinetic metamagnetic spin-5/2 Blume-Capel model

doi:10.1088/1674-1056/23/7/070511

Abstract The dynamic magnetic behavior of the kinetic metamagnetic spin-5/2 Blume-Capel model is examined, within a mean-field approach, under a time-dependent oscillating magnetic field. To describe the kinetics of the system, Glauber-type stochastic dynamics has been utilized. The mean-field dynamic equations of the model are obtained from the Master equation. Firstly, these dynamic equations are solved to find the phases in the system. Then, the dynamic phase transition temperatures are obtained by investigating the thermal behavior of dynamic sublattice magnetizations. Moreover, from this investigation, the nature of the phase transitions (first- or second-order) is characterized. Finally, the dynamic phase diagrams are plotted in five different planes. It is found that the dynamic phase diagrams contain the paramagnetic (P), antiferromagnetic (AF_5/2, AF_3/2, AF_1/2) phases and five different mixed phases. The phase diagrams also display many dynamic critical points, such as tricritical point, triple point, quadruple point, double critical end point and separating point.

Keywords: metamagnetism spin-5/2 Blume-Capel model dynamic phase transitions dynamic phase diagrams Glauber-type stochastic dynamics

Received: 19 July 2013
Revised: 29 November 2013
Accepted manuscript online:

PACS:	05.70.Fh	(Phase transitions: general studies)
	75.10.Hk	(Classical spin models)
	74.40.Gh	(Nonequilibrium superconductivity)
	75.30.Kz	(Magnetic phase boundaries (including classical and quantum magnetic transitions, metamagnetism, etc.))

Corresponding Authors: Ümüt Temizer
E-mail: umut.temizer@bozok.edu.tr

About author: 05.70.Fh; 75.10.Hk; 74.40.Gh; 75.30.Kz

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Ümüt Temizer Nonequilibrium behavior of the kinetic metamagnetic spin-5/2 Blume-Capel model 2014 Chin. Phys. B 23 070511

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Nonequilibrium behavior of the kinetic metamagnetic spin-5/2 Blume-Capel model

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