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Issue 2, 2020

Judging the phase transition pressure of the unknown parent phase if the resulting state is known

Author affiliations

Abstract

In high-pressure phase transition experiments, the crystal structure of the intermediate phase in some phase transitions is difficult to successfully measure due to the limitations of the experimental conditions. The absence of crystal structure data for the intermediate phase also makes it difficult to calculate the pressure point from the intermediate phase to the new phase by the traditional thermodynamic criterion in theoretical simulations. The Conch Criterion is employed by us to successfully verify the phase transition points by observing the reverse shifts of the DOS (electron density of states) curves for the new phase of Cu2S, PbS, PbSe and PbTe, which breaks through the constraints of the traditional criterion and realizes tracing the source of the phase transition in theoretical calculations.

Graphical abstract: Judging the phase transition pressure of the unknown parent phase if the resulting state is known

Article information


Submitted
04 Nov 2019
Accepted
03 Dec 2019
First published
03 Dec 2019

Phys. Chem. Chem. Phys., 2020,22, 624-627
Article type
Paper

Judging the phase transition pressure of the unknown parent phase if the resulting state is known

S. Zhu, H. Qin, W. Zeng, D. Fan, B. Tang, F. Liu and Q. Liu, Phys. Chem. Chem. Phys., 2020, 22, 624 DOI: 10.1039/C9CP05985G

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