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Theoretical Temperature-Pressure Phase Diagram for {N(CH 3) 4} 2ZnCl 4
Author(s) -
Daniil G. Sannikov,
Grigorii A. Kessenikh,
Hiroyuki Mashiyama
Publication year - 2000
Publication title -
journal of the physical society of japan
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.76
H-Index - 139
eISSN - 1347-4073
pISSN - 0031-9015
DOI - 10.1143/jpsj.69.130
Subject(s) - phase diagram , triple point , diagram , thermodynamics , phase transition , crystal (programming language) , physics , materials science , phase (matter) , condensed matter physics , mathematics , quantum mechanics , statistics , computer science , programming language
A phenomenological approach for construction theoretical phase diagrams with multiple phase transitions including incommensurate transitions is developed for the case when a special triple point, a Lifshitz-type point, is assumed to be present in the experimental diagram for N(CH_3)_4_2ZnCl_4 crystal family. The theoretical temperature-pressure phase diagram for N(CH_3)_4_2ZnCl_4 is plotted and is found to be in agreement with the experimental phase diagram. The approximations and assumptions made in the construction of the diagrams are discussed

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