Construction of phase diagrams for nanoscaled Ising thin films on the honeycomb lattice using cellular automata simulation approach |
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Authors: | Mehrdad Ghaemi Nabi Javadi |
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Institution: | Department of Chemistry, Kharazmi University, Tehran, Iran |
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Abstract: | The phase diagrams of the three-layer Ising model on the honeycomb lattice with a diluted surface have been constructed using the probabilistic cellular automata based on Glauber algorithm. The effects of the exchange interactions on the phase diagrams have been investigated. A general mathematical expression for the critical temperature is obtained in terms of relative coupling r = J1/J and Δs = (Js/J) ? 1, where J and Js represent the nearest neighbor coupling within inner- and surface-layers, respectively, and each magnetic site in the surface-layer is coupled with the nearest neighbor site in the inner-layer via the exchange coupling J1. In the case of antiferromagnetic coupling between surface-layer and inner-layer, system reveals many interesting phenomena, such as the possibility of existence of compensation line before the critical temperature. |
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Keywords: | Ising model cellular automata simulation phase diagrams compensation temperature honeycomb lattice |
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