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Pressure-induced normal-incommensurate and incommensurate-commensurate phase transitions in CrOCl

Title data

Bykov, Maxim ; Bykova, Elena ; Dubrovinsky, Leonid ; Hanfland, Michael ; Liermann, Hanns-Peter ; van Smaalen, Sander:
Pressure-induced normal-incommensurate and incommensurate-commensurate phase transitions in CrOCl.
In: Scientific Reports. Vol. 5 (21 May 2015) . - Art. No. 9647.
ISSN 2045-2322
DOI: https://doi.org/10.1038/srep09647

Project information

Project financing: Deutsche Forschungsgemeinschaft

Abstract in another language

The high-pressure behavior of layered CrOCl is shown to be governed by non-bonded interactions between chlorine atoms in relation to a rigid framework composed of Cr and O atoms. The competition between optimizing intra- and interlayer Cl–Cl distances and the general trend towards denser packing defines a novel mechanism for high-pressure phase transitions of inorganic materials. CrOCl possesses an incommensurate phase for 16–51 GPa. Single-crystal x-ray diffraction in a diamond anvil cell provides an accurate description of the evolution of the incommensurate wave with pressure. It thus demonstrates a continuous increase of the amplitude up to 30 GPa, followed by a decrease of the wavelength until a lock-in transition occurs at 51 GPa.

Further data

Item Type: Article in a journal
Refereed: Yes
Keywords: Chemistry; Condensed-matter physics; Materials science
Institutions of the University: Faculties
Faculties > Faculty of Mathematics, Physics und Computer Science
Faculties > Faculty of Mathematics, Physics und Computer Science > Group Material Sciences
Faculties > Faculty of Mathematics, Physics und Computer Science > Group Material Sciences > Chair Crystallography
Faculties > Faculty of Mathematics, Physics und Computer Science > Group Material Sciences > Chair Crystallography > Chair Crystallography - Univ.-Prof. Dr. Sander van Smaalen
Profile Fields > Advanced Fields > Advanced Materials
Research Institutions
Research Institutions > Research Centres
Research Institutions > Research Centres > Bavarian Research Institute of Experimental Geochemistry and Geophysics - BGI
Profile Fields
Profile Fields > Advanced Fields
Result of work at the UBT: Yes
DDC Subjects: 500 Science > 530 Physics
500 Science > 550 Earth sciences, geology
Date Deposited: 24 Jun 2015 07:50
Last Modified: 24 Feb 2017 09:32
URI: https://eref.uni-bayreuth.de/id/eprint/15360