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Structural properties of A2SnO4 (A = Ba,Sr): A neutron diffraction study

Green, M.A., Prassides, K., Day, P., Stalick, J.K. (1996) Structural properties of A2SnO4 (A = Ba,Sr): A neutron diffraction study. Journal of the Chemical Society-Faraday Transactions, 92 (12). pp. 2155-2159. ISSN 0956-5000. (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided)

The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided. (Contact us about this Publication)
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Abstract

The structural properties of the layered oxides Ba2SnO4 and Sr2SnO4 have been studied as a function of temperature by high resolution powder neutron diffraction. As a result of excellent size matching between the SnO2 and Ba2O2 layers, Ba2SnO4 adopts the tetragonal K2NiF4 structure (space group I4/mmm) and undergoes no structural phase transition on cooling. Sr2SnO4, on the other hand, is orthorhombically distorted, (b - a)/(b + a) = 7.2(7) Ã? 10-4 at ambient temperature (space group Bmab) as a result of the co-operative rigid tilt of the corner-sharing SnO6 octahedra, which relieves the compressive stress of the SnO2 layers. Upon cooling, it undergoes a phase transition to a primitive tetragonal phase (space group P42/ncm) which is characterised by a different rotational mode of distortion.

Item Type: Article
Additional information: Unmapped bibliographic data: LA - English [Field not mapped to EPrints] AD - Royal Institution of Great Britain, 21 Albemarle Street, London, W1X 4BS, United Kingdom [Field not mapped to EPrints] AD - School of Chemistry and Molecular Sciences, University of Sussex, Brighton, BN1 9QJ, United Kingdom [Field not mapped to EPrints] AD - Materials Science and Engineering Laboratory, National Institute of Standards and Technology, Gaithersburg, MD 20899, United States [Field not mapped to EPrints] AD - Inorganic Chemistry Laboratory, Oxford University, Oxford, 0X1 3QR, United Kingdom [Field not mapped to EPrints] DB - Scopus [Field not mapped to EPrints]
Subjects: Q Science > QC Physics > QC173.45 Condensed Matter
Q Science > QD Chemistry > QD478 Solid State Chemistry
Divisions: Faculties > Sciences > School of Physical Sciences > Functional Materials Group
Depositing User: Giles Tarver
Date Deposited: 21 Oct 2015 11:33 UTC
Last Modified: 29 May 2019 16:11 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/51164 (The current URI for this page, for reference purposes)
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