Superconductivity:an example S.J.T.U. Phase Transformation and Applications 2 C,-C.=-VTMh dr ≠0 atT-Tc Normal state Super conducting state Tc→ Figure 4.8 Critical temperature as a function of magnetie field for a superconducting material. SJTU Thermodynamics of Materials Spring2018©X.J.Jin Lecture 8 Chemical equilibriumPhase Transformation and Applications S. J. T. U. SJTU Thermodynamics of Materials Spring 2018 © X. J. Jin Lecture 8 Chemical equilibrium Superconductivity: an example 0 2 0         − = − d T atT=Tc Cn Cs VTc 