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Thermodynamical Properties of Spin-3/2 Ising Model in a Longitudinal Random Field with Crystal Field |
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| Authors: | LIANG Ya-Qiu WEI Guo-Zhu ZHANG Hong SONG Guo-Li |
| Institution: | Department of Physics, Liaoning University, Shenyang 110036, China;College of Sciences, Northeastern University, Shenyang 110006, China College of Sciences, Northeastern University, Shenyang 110006, China;International Center for Material Physics, the Chinese Academy of Sciences, Shenyang 110016, China Department of Physics, Liaoning University, Shenyang 110036, China Machinery Research Institute of Liaoning Province, Shenyang 110032, China |
| Abstract: | A theoretical study of a spin-3/2 Ising model in a longitudinal random field with crystal field is studiedby using of the effective-field theory with correlations. The phase diagrams and the behavior of the tricritical point areinvestigated numerically for the honeycomb lattice when the randorm field is bimodal. In particular, the specific heatand the internal energy are examined in detail for the system with a crystal-field constant in the critical region wherethe ground-state configuration may change from the spin-3/2 state to the spin-1/2 state. We find many interestingphenomena in the system. |
| Keywords: | Ising model random field crystal field specific heat |
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