| 近邻自旋耦合作用常数J对混合自旋模型的影响 |
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| 引用本文： | 张鑫.近邻自旋耦合作用常数J对混合自旋模型的影响[J].临沂师范学院学报,2008,30(6):34-38. |
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| 作者姓名： | 张鑫 |
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| 作者单位： | 滨州学院物理与电子科学系,山东滨州,256603 |
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| 基金项目： | 滨州学院“青年人才创新工程”基金项目(BZXYQNLG200620)资助 |
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| 摘 要： | 利用迭代方法，分别在铁磁和亚铁磁两种情况下，研究了晶体场作用下二重Cayley树上自旋为1／2和3／2的混合Ising模型的热力学和临界现象．通过数值求解，得出了q=6时的亚晶格磁化强度MA，MB和系统总磁化强度M随温度变化的曲线，并把两种情况所得结果进行比较．研究发现，铁磁和亚铁磁情况下的予晶格上的磁化强度随温度变化的趋势有所区别，同时得出总磁化强度M的变化趋势与亚晶格磁化强度MA的变化一致．结果还发现，两种情况下该系统均不存在三临界行为．
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| 关 键 词： | 磁化强度 混合Ising自旋系统 Cayley树 迭代方法 统计物理 |
The Influence of Nearest-neighbor Exchange Interaction Parameter on Mixed Spin System |
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| ZHANG Xin.The Influence of Nearest-neighbor Exchange Interaction Parameter on Mixed Spin System[J].Journal of Linyi Teachers' College,2008,30(6):34-38. |
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| Authors: | ZHANG Xin |
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| Institution: | ZHANG Xin (Department of Physics and Electronic Science, Binzhou University, Binzhou Shandong 256603, China) |
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| Abstract: | Using the recursion method,the phase transition and the thermodynamic behavior of the mixed spin-1/2 and spin-2\3 Ising system on the two-fold Cayley tree are studied for the ferromagnetic and ferrimagnetic cases,respectively.The relations of sublattice magnetizations MA,MB and the total magnetization M with the temperature are obtained by the numerical calculation.After comparing the results of the two cases,it is found that the behavior of M is similar to that of MA and that the sublattice magnetizations ... |
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| Keywords: | magnetization mixed spin Ising system Cayley tree recursion method statistical physics |
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