Tetragonal‐to‐Cubic Structural Phase Transition in Pollucite by Low‐Temperature X‐ray Powder Diffraction
Authors:
- 1 October 1997
- journal article
- Published by Wiley in Journal of the American Ceramic Society
- Vol. 80 (10) , 2693-2695
Abstract
The tetragonal‐to‐cubic structural phase transition in pollucite (CsAlSi 2 O 6 ) was investigated using low‐temperature X‐ray powder diffraction in the temperature range of 93 to 298 K, and the lattice constants were refined with Rietveld analysis. It was found that CsAlSi 2 O 6 had a tetragonal phase with a space group of I 4 1 /acd in the temperature range of 93 to 248 K, a = 1.36337(4) nm, c = 1.36988(6) nm at 248 K, and underwent a phase transition from tetragonal to cubic with a space group of Ia‐3 in the temperature range of 248 to 273 K, a = 1.36645(3) nm at 273 K.Keywords
This publication has 5 references indexed in Scilit:
- Preparation and Thermal Expansion Behavior of Pollucite Powders by Sol-Gel ProcessingJournal of the Ceramic Society of Japan, 1991
- Thermal expansion and structure of leucite-type compoundsThe Journal of Physical Chemistry, 1976
- Synthesis and Thermal Expansion of Polycrystalline Cesium MineralsJournal of the American Ceramic Society, 1972
- The crystal structure and chemical composition of polluciteZeitschrift für Kristallographie, 1969
- The thermal expansion of the sodalite group of mineralsMineralogical Magazine and Journal of the Mineralogical Society, 1968