| 查看: 487 | 回复: 0 | |||
lxy12365492木虫 (正式写手)
小运河上最彪的女人
|
[交流]
A little discussion on Ehrenfest's classification of phase transitions
|
|
I am right now learning about the classification about phase transition and here are things that I read. There's a plenty of different phase transitions: solid-liquid, liquid-gas, ferromagnet-paramagnet, superconductor-metal. Ehrenfest suggested an elegant way to classify all these phase transitions. Consider two co-existing phases. In thermodynamic equilibrium of two phases one finds g1=g2. It means that if we consider 3D-graphs g1(p, T) and g2(p, T), the specific Gibbs functions of two phases would correspond to two surfaces. The intersection of the surfaces corresponds to the phase boundary. Although at the phase boundary g1=g2, g1(p, T) and g2(p, T) are different surfaces. Ehrenfest suggested to assign an order to phase transition. The order of a transition is defined as the order of the lowest differential of the Gibbs function or other thermodynamic potential which shows a discontinuity at the transition. Find me by WeChat ID: hollandDDG and we can learn English together.  |
回复此楼» 猜你喜欢
面上提前没消息，有中的吗
已经有14人回复
-
这种情况还有戏吗
已经有12人回复
-
微信指数没变化，科研之友没阅读
已经有19人回复
-
准备明年的基金了
已经有7人回复
-
面上再次挂了，太难了，躺也躺不了，倦也卷不过，小学校之殇！
已经有24人回复
-
2026年国自然面上资助率
已经有21人回复
-
基础研究怎么拉横向，学校到款任务越来越多，难以完成 拉横向，都有哪些途径啊
已经有10人回复
-
2027年申博
已经有3人回复
-
一个有机合成实验室都需要哪些设备？
已经有7人回复
-
HXDI做水性聚氨酯乳液，是不是特别容易出渣
已经有3人回复
