Order—Disorder Phenomena. V. Pippard Equations and the Phase Diagram for Ammonium Chloride
- 1 August 1966
- journal article
- research article
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 45 (3), 763-766
- https://doi.org/10.1063/1.1727677
Abstract
The Pippard equations and the phase diagram for NH4Cl are analyzed in terms of a compressible Ising model. It is demonstrated that the Pippard relations are completely consistent with the occurrence of a first‐order transition in the immediate vicinity of a lambda point. In addition, the substantial variation in the slope of the order—disorder transition line with pressure can be well represented by this Ising model.Keywords
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