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Effective field investigation of dynamic phase transitions for site diluted Ising ferromagnets driven by a periodically oscillating magnetic field
Authors:Ü  mit Akıncı,Yusuf Yü  ksel,Erol Vatansever,Hamza Polat
Affiliation:1. Department of Physics, Dokuz Eylül University, TR-35160 ?zmir, Turkey;2. Dokuz Eylül University, Graduate School of Natural and Applied Sciences, Turkey
Abstract:
Dynamic behavior of a site diluted Ising ferromagnet in the presence of a periodically oscillating magnetic field has been analyzed by means of the effective field theory (EFT). The dynamic equation of motion has been solved for a honeycomb lattice (z=3z=3) with the help of a Glauber type stochastic process. The global phase diagrams and the variation of the corresponding dynamic order parameter as a function of the Hamiltonian parameters and temperature has been investigated in detail and it has been shown that the system exhibits reentrant phenomena, as well as a dynamic tricritical point which disappears for sufficiently weak dilution.
Keywords:Effective field theory   Dynamic phase transition   Dynamic phase diagrams   Quenched disorder
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