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Physica A Statistical Mechanics and its Applications

Magnetic responses in the presence of a partial magnetic field on the rectangular Ising lattice

Shu-Chiuan Chang, Masuo Suzuki

Published Jun 16, 2004• 3 citations
Publisher
DOI
10.1016/j.physa.2004.04.131

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The mixed spin-1/2 and spin-5/2 Ising model is investigated on the Bethe lattice in the presence of a magnetic field h via the recursion relations method.A ground-state phase diagram is constructed which may be needful to explore important regions of the temperature phase diagrams of a model.The order-parameters, the corresponding response functions and internal energy are thoroughly investigated in order to typify the nature of the phase transition and to get the corresponding temperatures.So, in the absence of the magnetic field, the temperature phase diagrams are displayed in the case of an equal crystal-field on the (k B T /|J |, D/|J |) plane when q = 3, 4, 5 and 6.The model only exhibits the second-order phase transition for appropriate values of physical parameters of a model.