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Dynamic magnetic properties of the kinetic cylindrical Ising nanotube
Authors:Bayram Deviren  Yunus Şener  Mustafa Keskin
Affiliation:1. Department of Physics, Nevsehir University, 50300 Nevsehir, Turkey;2. Institute of Science, Nevsehir University, 50300 Nevsehir, Turkey;3. Department of Physics, Erciyes University, 38039 Kayseri, Turkey
Abstract:The nature (time variation) of response magnetizations m(wt) of the kinetic cylindrical Ising nanotube in the presence of a periodically varying external magnetic field h(wt) is studied by employing the effective-field theory (EFT) with correlations as well as the Glauber-type stochastic dynamics. We have determined the time variations of m(wt) and h(wt) for various temperatures, and investigated the dynamic magnetic hysteresis behavior. Temperature dependence of the dynamic magnetizations, hysteresis loop areas and correlations are investigated in order to characterize the nature (first- or second-order) of the dynamic transitions as well as to obtain the dynamic phase transition temperatures. We also present the dynamic phase diagrams in the three different planes and compare the results of the equilibrium and nonequilibrium states. The phase diagrams exhibit dynamic tricritical, isolated critical, multicritical and triple points. The results are in good agreement with some experimental and theoretical results.
Keywords:Nanomagnetic material   Cylindrical Ising nanotube   Dynamic phase transition   Dynamic hysteresis   Glauber-type stochastic dynamics
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