nth order phase transition

https://doi.org/10.1351/goldbook.N04224
A transition in which the molar Gibbs energy (or chemical potential) and its (n−1)th-order derivatives are continuous, whereas the nth-order derivatives with respect to temperature and pressure are discontinuous at the transition point.
See: first-order phase transition, second-order transition
Source:
PAC, 1994, 66, 577. (Definitions of terms relating to phase transitions of the solid state (IUPAC Recommendations 1994)) on page 587 [Terms] [Paper]
Citation: 'nth order phase transition' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. https://doi.org/10.1351/goldbook.N04224 RIS BibTex EndNote
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Last revised: February 24, 2014