Abstract
The equation for the “stability limit” or spinodal, suggested by Gibbs, is directly related to second-order phase transitions, because the line of these transitions represents the merged spinodals of both interconverting phases. Therefore, it is the Gibbs equation that defines the line of second-order phase transitions. This equation and the known concepts of the order parameter are used to derive the basic analytical relations for the thermodynamic functions in the region of second-order phase transitions and to determine the most general characteristic regularities of these transitions.
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Novikov, I.I. Application of the Gibbs Equations for the Stability Limit to the Description of Second-Order Phase Transitions: General Relations. High Temperature 41, 312–318 (2003). https://doi.org/10.1023/A:1024278207716
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DOI: https://doi.org/10.1023/A:1024278207716