The European Physical Journal Special Topics

, Volume 226, Issue 5, pp 1031–1040

Pitfalls and feedback when constructing topological pressure-temperature phase diagrams

  • R. Ceolin
  • S. Toscani
  • Ivo B. Rietveld
  • M. Barrio
  • J. Ll. Tamarit

DOI: 10.1140/epjst/e2016-60246-6

Cite this article as:
Ceolin, R., Toscani, S., Rietveld, I.B. et al. Eur. Phys. J. Spec. Top. (2017) 226: 1031. doi:10.1140/epjst/e2016-60246-6
Part of the following topical collections:
  1. Phase Equilibria and Their Applications


The stability hierarchy between different phases of a chemical compound can be accurately reproduced in a topological phase diagram. This type of phase diagrams may appear to be the result of simple extrapolations, however, experimental complications quickly increase in the case of crystalline trimorphism (and higher order polymorphism). To ensure the accurate positioning of stable phase domains, a topological phase diagram needs to be consistent. This paper gives an example of how thermodynamic feedback can be used in the topological construction of phase diagrams to ensure overall consistency in a phase diagram based on the case of piracetam crystalline trimorphism.

Copyright information

© EDP Sciences and Springer 2017

Authors and Affiliations

  1. 1.Laboratoire de Chimie Physique et Chimie Minérale, Faculté de Pharmacie, Université Paris DescartesParisFrance
  2. 2.Grup de Caracterització de Materials (GCM), Departament de Física i Enginyeria Nuclear, Universitat Politècnica de Catalunya, Diagonal 647BarcelonaSpain
  3. 3.Département de Chimie – UMR 6226, Faculté des Sciences, Université de Rennes 1, Bâtiment 10BRennes CedexFrance

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