at Google ScholarTitle data
Grzechnik, Andrzej ; Dmitriev, Vladimir ; Weber, Hans-Peter ; Gesland, Jean-Yves ; van Smaalen, Sander:
The crystal structures of pressure-induced LiSrAlF6-II and LiCaAlF6-II.
In: Journal of Physics: Condensed Matter.
Vol. 16
(2004)
Issue 7
.
- pp. 1033-1043.
ISSN 1361-648X
DOI: https://doi.org/10.1088/0953-8984/16/7/003
Abstract in another language
The crystal structures of LiCaAlF 6 -II and LiSrAlF 6 -II (both P 2 1 / c , Z = 4) occurring at high pressures and room temperature were studied with synchrotron angle-dispersive x-ray powder diffraction in diamond anvil cells. The structure of LiSrAlF 6 -II stable between 1.6 and 3.0 GPa was solved with a global optimisation algorithm and group theory considerations, and refined with the Rietveld method in the rigid-body approximation. It is a distorted variant of the ambient pressure polymorph (LiSrAlF 6 -I, ##IMG## http://ej.iop.org/images/0953-8984/16/7/003/cm173091ieqn1.gif {P\bar 3 1c, Z=2} ), in which each cation occupies a deformed octahedral site. LiCaAlF 6 transforms to this monoclinic polymorph II above about 7 GPa. The differences in the high-pressure behaviours of LiCaAlF 6 and LiSrAlF 6 are discussed by considering the ionic radii.
Further data
| Item Type: | Article in a journal |
|---|---|
| Refereed: | Yes |
| Institutions of the University: | 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 Faculties Faculties > Faculty of Mathematics, Physics und Computer Science Faculties > Faculty of Mathematics, Physics und Computer Science > Group Material Sciences |
| Result of work at the UBT: | Yes |
| DDC Subjects: | 500 Science > 530 Physics |
| Date Deposited: | 17 Mar 2016 10:27 |
| Last Modified: | 26 Nov 2019 10:29 |
| URI: | https://eref.uni-bayreuth.de/id/eprint/31885 |