| Magnetic properties of mixed Ising system with random field |
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| 作者姓名： | 梁雅秋 魏国柱 张起 邱巍 藏树良 |
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| 作者单位： | Department of Physics, Liaoning University, Shengyang 110036, China;College of Sciences, Northeastern University, Shenyang 110006, China; International Center for Material Physics, Chinese Academy of Sciences, Shengyang 110015, China;College of Sciences, Northeastern University, Shenyang 110006, China;Department of Physics, Liaoning University, Shengyang 110036, China;School of Chemical Science & Engineering, Liaoning University, Shengyang 110036, China |
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| 基金项目： | Project supported by the Foundation of National 211 Engineering Program. |
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| 摘 要： | A spin-1/2 and spin-3/2 mixed Ising system in a random field is studied by the use of effective-field theory with correlations. The phase diagrams and thermal behaviours of magnetizations are investigated numerically for the honeycomb lattice (z=3) and square lattice (z=4) respectively. The tricritical behaviours for both honeycomb and square lattices, as well as the reentrant behaviour for the square lattice are found.
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| 关 键 词： | 混合自旋 随机场 相位图 磁化 统计物理学 单原子格 |
| 收稿时间： | 2004-01-14 |
Magnetic properties of mixed Ising system with random field |
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| Liang Ya-Qiu,Wei Guo-Zhu,Zhang Qi,Qiu Wei and Zang Shu-Liang.Magnetic properties of mixed Ising system with random field[J].Chinese Physics B,2004,13(12):2147-2152. |
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| Authors: | Liang Ya-Qiu Wei Guo-Zhu Zhang Qi Qiu Wei and Zang Shu-Liang |
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| Institution: | College of Sciences, Northeastern University, Shenyang 110006, China; College of Sciences, Northeastern University, Shenyang 110006, China; International Center for Material Physics, Chinese Academy of Sciences, Shengyang 110015, China; Department of Physics, Liaoning University, Shengyang 110036, China; School of Chemical Science & Engineering, Liaoning University, Shengyang 110036, China |
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| Abstract: | A spin-1/2 and spin-3/2 mixed Ising system in a random field is studied by the use of effective-field theory with correlations. The phase diagrams and thermal behaviours of magnetizations are investigated numerically for the honeycomb lattice (z=3) and square lattice (z=4) respectively. The tricritical behaviours for both honeycomb and square lattices, as well as the reentrant behaviour for the square lattice are found. |
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| Keywords: | mixed spins random field phase diagram magnetizations |
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