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Inversion of quartz solid solutions at cryogenic temperatures
Author(s) -
Zandona Alessio,
Helsch Gundula,
Deubener Joachim
Publication year - 2020
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/jace.17393
Subject(s) - quartz , solid solution , phase diagram , crystallization , diffraction , materials science , lattice (music) , mineralogy , phase transition , analytical chemistry (journal) , thermodynamics , phase (matter) , geology , chemistry , optics , composite material , metallurgy , physics , chromatography , organic chemistry , acoustics
Quartz solid solution crystals of six different compositions were obtained from crystallization of glass powders belonging to the Li 2 O–Al 2 O 3 ‐SiO 2 (LAS) system. They were analyzed in situ by laboratory‐based X‐ray diffraction down to cryogenic temperatures (−190°C). Temperature‐resolved analysis of their lattice parameters allowed determination of the critical inversion temperature T c in these materials, marking the displacive phase transition from a high‐quartz‐ to a low‐quartz‐like lattice. Integrating available data from other literature sources, an updated phase diagram for the occurrence of high and low quartz solid solution phases is provided for the LAS system; these data are expected to support future development of functional materials relying on these crystalline phases.