二级相变(Second order phase transition)为化学势的二阶偏微分发生突变的一类相变。相变时没有热效应和熵变,但热膨胀系数,压缩系数,比热容这三个化学势的二阶偏微分量发生突变。
首页 ... 二级反应 second order reaction 二级相变 second order phase change 法拉第常数 faraday constant ...
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...的突变 一级相变(First-order phase transformations) S S β α ≠ V V β α ≠ 二级相变(Second order phase transitions) 在相变过程中,化学势的二阶偏微分在相变过程中发 生突变的相变称为二级相变。
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赝二级相变温度 pseudo second order phase transition temperature
在三相点温度以上,超流和正常相之间有二级相变。
Above the critical point, the second-order phase-transition line between the superfluid and the normal phase is determined.
观察到一级相变点值变大,二级相变点值变小,反应窗口变宽。
It is observed that the width of the reactive window is broadened, the first critical point becomes larger and the second critical point becomes smaller.
随着晶场随机浓度的减小,三临界点被抑制,同时出现了二级相变线的重入现象;
When the random concentration of the crystal field decreases the tricritical point is depressed, at the same time the reentrant phenomenon occurs.
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