| Landau相变中的自由能 |
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| 引用本文： | 蔡玉平,冯蒙丽,宋春荣,陈红叶.Landau相变中的自由能[J].军械工程学院学报,2014(4):66-69. |
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| 作者姓名： | 蔡玉平 冯蒙丽 宋春荣 陈红叶 |
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| 作者单位： | 军械工程学院基础部,河北石家庄050003 |
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| 摘 要： | Landau用序参量的幂级数展开来表示相变温度附近的自由能,强调对称性与序参量在相变中的作用.正确书写自由能形式,可以计算可能相的温度曲线,得到关于序参量的方程,从而推知系统的结构.
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| 关 键 词： | Landau理论 自由能 序参量 |
Free Energy of Landau Phase Transitions Theory |
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| CAI Yu-ping,FENG Meng-li,SONG Chun-rong,CHEN Hong-ye.Free Energy of Landau Phase Transitions Theory[J].Journal of Ordnance Engineering College,2014(4):66-69. |
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| Authors: | CAI Yu-ping FENG Meng-li SONG Chun-rong CHEN Hong-ye |
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| Institution: | (Basic Courses Department,Ordnance Engineering College,Shijiazhuang 050003,China) |
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| Abstract: | From Landau theory,free energy near the phase transition temperature should be ex-panded in a power series of the order parameter.The functions of symmetry and order parameter are emphasized.We can get the equation of order parameter,and know the relation of phase tran-sition temperature and order parameter,and study the structures of crystals. |
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| Keywords: | Landau theory free energy order parameter |
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