| 各向异性混合自旋海森堡模型的临界性质 |
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| 引用本文： | 许晨.各向异性混合自旋海森堡模型的临界性质[J].苏州大学学报(医学版),1998,14(1):52-57. |
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| 作者姓名： | 许晨 |
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| 作者单位： | 苏州大学物理科学与技术学院 苏州 |
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| 摘 要： | 本文将双粒子集团近似和分离路径积分表示结合起来，对于具有交换各向异性和单粒子单轴向向异性的混合自旋海森堡磁性系统临界性质进行了研究，得到了系统的磁化曲线和相图。
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| 关 键 词： | 各向异性 磁性材料 海森堡模型 临界性质 |
CRITICAL PROPERTIES OF MIXED SPIN ANISOTROPIC HEISENBERG MODEL |
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| Xu Chen.CRITICAL PROPERTIES OF MIXED SPIN ANISOTROPIC HEISENBERG MODEL[J].Journal of Suzhou University(Natural Science),1998,14(1):52-57. |
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| Authors: | Xu Chen |
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| Abstract: | In this paper, we study a mixed-spin anisotropic Heisenberg ferromagnet with a single-ion uniaxial anisotropy by using two-site cluster approximation with the discretized path-integral representation. The average spontaneous magnetization as a function of the temperature and the phase diagrams of the system show that the anisotropy plays an important role in critical temperature and tricritical point of the system. |
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| Keywords: | Heisenberg ferromagnet Magnetization Tricritical point |
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