Orthorhombic-Cubic Phase Transition in Rb 2 CoSi 5 O 12 Leucite Analogue

BELL, Anthony Martin Thomas (2023). Orthorhombic-Cubic Phase Transition in Rb 2 CoSi 5 O 12 Leucite Analogue. Minerals, 13 (2).

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Abstract

An Rb2CoSi5O12 leucite analogue has been synthesized. An ambient temperature X-ray powder diffraction study shows that this analogue has the Pbca orthorhombic structure of Cs2CdSi5O12. A high temperature X-ray powder diffraction study on this analogue shows a Pbca orthorhombic to Pa3¯ cubic phase transition at 457 K. The Rb2CoSi5O12 unit cell volume initially decreases with increasing temperature on passing through this phase transition.

Item Type:	Article
Additional Information:	** Article version: VoR ** From MDPI via Jisc Publications Router ** Licence for VoR version of this article: https://creativecommons.org/licenses/by/4.0/ ** Peer reviewed: TRUE ** Acknowledgements: Acknowledgments: The author wishes to acknowledge the use of the EPSRC funded National Chemical Database Service hosted by the Royal Society of Chemistry. The author also wishes to thank Alex Scrimshire of Sheffield Hallam University for the TGA/DSC measurements. **Journal IDs: eissn 2075-163X **Article IDs: publisher-id: minerals-13-00210 **History: collection 02-2023; published_online 31-01-2023; accepted 30-01-2023; rev-recd 27-01-2023; submitted 08-12-2022
Uncontrolled Keywords:	Article, X-ray powder diffraction, minerals, phase transitions, leucite silicate framework structures, Rietveld refinement
Identification Number:	https://doi.org/10.3390/min13020210
SWORD Depositor:	Colin Knott
Depositing User:	Colin Knott
Date Deposited:	24 Feb 2023 17:10
Last Modified:	24 Feb 2023 17:10
URI:	https://shura.shu.ac.uk/id/eprint/31539

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