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On the incommensurately modulated structure of ∊′-LiₓV₂O₅ at room temperature

Title data

Katzke, Hannelore ; Czank, M. ; Depmeier, Wulf ; van Smaalen, Sander:
On the incommensurately modulated structure of ∊′-LiₓV₂O₅ at room temperature.
In: Philosophical Magazine Part B. Vol. 75 (1997) Issue 5 . - pp. 757-767.
ISSN 1463-6417
DOI: https://doi.org/10.1080/13642819708202352

Abstract in another language

Abstract Electron diffraction was used to study the lithium-intercalated V2O5 bronzes Li x V2O5. In the course of these investigations a new incommensurately modulated structure was detected at room temperature. The space group of the basic structure is Pmmn; the superspace group characterizing the one-dimensionally modulated structure is found to be Pmmn (0 γ ½). The incommensurate component γ of the modulation vector q is a function of the lithium stoichiometry and varies between γ = 0.531(4) and γ = 0.550(4) for ∊′-Li x V2O5 with 0.605(3) ≤ x ≤ 0.620(3). In the present paper we propose that an important contribution to the modulation results from repulsive Li+-Li+ forces, which impose an incommensurate ordering of the Li+ ions along b∗ in strings of cuboctahedral cavities between adjacent V2O5 layers.

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
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: 15 Jun 2016 08:49
Last Modified: 31 Jan 2018 13:12
URI: https://eref.uni-bayreuth.de/id/eprint/32682