CAJ | 학술논문

应用内可逆卡诺循环的方法，导出了各种物质在临界点附近可逆与不可逆二级相变普遍适用的比热跃变公式以及广义的爱伦菲斯特方程。对简单(P，V，T)系统、超导、电介质顺电一铁电二级相变进行了应用讨论。
응용내가역잡낙순배적방법，도출료각충물질재림계점부근가역여불가역이급상변보편괄용적비열약변공식이급엄의적애륜비사특방정。대간단(P，V，T)계통、초도、전개질순전일철전이급상변진행료응용토론。
A new formula for the specific heat jump ΔC｜Tc to the phase transition of the second order and generalized Ehrenfest equation are derived by means of the method of endoreversible Carnot cycle, which can mirror the irreversible features in a phase transition of the second order. The results are universal for reversible phase transition and irreversible phase transition of various substances. Then, the irreversible phase transition of the second order for simple system (P,V,T), the superconducting transition and paraelectricity-ferroelectrics transition are discussed by means of the new formula for the specific heat jump.