Dynamic magnetic behavior of the mixed spin (2, 5/2) Ising system with antiferromagnetic/antiferromagnetic interactions on a bilayer square lattice

doi:10.1088/1674-1056/22/12/120507

Chin. Phys. B ›› 2013, Vol. 22 ›› Issue (12): 120507-120507.doi: 10.1088/1674-1056/22/12/120507

Dynamic magnetic behavior of the mixed spin (2, 5/2) Ising system with antiferromagnetic/antiferromagnetic interactions on a bilayer square lattice

Mehmet Ertaş, Mustafa Keskin

Department of Physics, Erciyes University, 38039 Kayseri, Turkey

收稿日期:2013-05-18 修回日期:2013-07-04 出版日期:2013-10-25 发布日期:2013-10-25

Dynamic magnetic behavior of the mixed spin (2, 5/2) Ising system with antiferromagnetic/antiferromagnetic interactions on a bilayer square lattice

Mehmet Ertaş, Mustafa Keskin

Department of Physics, Erciyes University, 38039 Kayseri, Turkey

Received:2013-05-18 Revised:2013-07-04 Online:2013-10-25 Published:2013-10-25
Contact: Mehmet Ertaş E-mail:mehmetertas@erciyes.edu.tr

摘要/Abstract

摘要： Using the mean-field theory and Glauber-type stochastic dynamics, we study the dynamic magnetic properties of the mixed spin (2, 5/2) Ising system for the antiferromagnetic/antiferromagnetic (AFM/AFM) interactions on the bilayer square lattice under a time varying (sinusoidal) magnetic field. The time dependence of average magnetizations and the thermal variation of the dynamic magnetizations are examined to calculate the dynamic phase diagrams. The dynamic phase diagrams are presented in the reduced temperature and magnetic field amplitude plane and the effects of interlayer coupling interaction on the critical behavior of the system are investigated. We also investigate the influence of the frequency and find that the system displays richer dynamic critical behavior for higher values of frequency than that of the lower values of it. We perform a comparison with the ferromagnetic/ferromagnetic (FM/FM) and AFM/FM interactions in order to see the effects of AFM/AFM interaction and observe that the system displays richer and more interesting dynamic critical behaviors for the AFM/AFM interaction than those for the FM/FM and AFM/FM interactions.

关键词: dynamic magnetic behavior of a bilayer Ising system, mixed spins, glauber-type stochastic dynamics, antiferromagnetic/antiferromagnetic interactions

Abstract: Using the mean-field theory and Glauber-type stochastic dynamics, we study the dynamic magnetic properties of the mixed spin (2, 5/2) Ising system for the antiferromagnetic/antiferromagnetic (AFM/AFM) interactions on the bilayer square lattice under a time varying (sinusoidal) magnetic field. The time dependence of average magnetizations and the thermal variation of the dynamic magnetizations are examined to calculate the dynamic phase diagrams. The dynamic phase diagrams are presented in the reduced temperature and magnetic field amplitude plane and the effects of interlayer coupling interaction on the critical behavior of the system are investigated. We also investigate the influence of the frequency and find that the system displays richer dynamic critical behavior for higher values of frequency than that of the lower values of it. We perform a comparison with the ferromagnetic/ferromagnetic (FM/FM) and AFM/FM interactions in order to see the effects of AFM/AFM interaction and observe that the system displays richer and more interesting dynamic critical behaviors for the AFM/AFM interaction than those for the FM/FM and AFM/FM interactions.

Key words: dynamic magnetic behavior of a bilayer Ising system, mixed spins, glauber-type stochastic dynamics, antiferromagnetic/antiferromagnetic interactions

中图分类号: (Lattice theory and statistics)

05.50.+q

05.70.Fh (Phase transitions: general studies) 64.60.Ht (Dynamic critical phenomena) 75.10.Hk (Classical spin models)

Mehmet Ertaş, Mustafa Keskin. Dynamic magnetic behavior of the mixed spin (2, 5/2) Ising system with antiferromagnetic/antiferromagnetic interactions on a bilayer square lattice[J]. Chin. Phys. B, 2013, 22(12): 120507-120507.

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Dynamic magnetic behavior of the mixed spin (2, 5/2) Ising system with antiferromagnetic/antiferromagnetic interactions on a bilayer square lattice

Dynamic magnetic behavior of the mixed spin (2, 5/2) Ising system with antiferromagnetic/antiferromagnetic interactions on a bilayer square lattice

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