Extended x-ray absorption fine structure spectroscopy and first-principles study of SnWO sub(4)

Extended x-ray absorption fine structure spectroscopy and first-principles study of SnWO sub(4)

The local atomic structure in alpha - and beta -SnWO sub(4) was studied by synchrotron radiation W L sub(3)-edge x-ray absorption spectroscopy at 10 and 300 K. Strongly distorted WO sub(6) octahedra were found in alpha -SnWO sub(4), whereas nearly regular WO sub(4) tetrahedra were observed in beta -...

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Bibliographic Details
Published in:Physica scripta Vol. 89; no. 4; pp. 1 - 5
Main Authors: Kuzmin, A, Anspoks, A, Kalinko, A, Timoshenko, J, Kalendarev, R
Format: Journal Article
Language:English
Published: 01-04-2014
Subjects:
Absorption spectroscopy
Atomic structure
Distortion
Fine structure
Jahn-Teller effect
Mathematical analysis
Synchrotron radiation
X-rays
Online Access:Get full text
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Summary:The local atomic structure in alpha - and beta -SnWO sub(4) was studied by synchrotron radiation W L sub(3)-edge x-ray absorption spectroscopy at 10 and 300 K. Strongly distorted WO sub(6) octahedra were found in alpha -SnWO sub(4), whereas nearly regular WO sub(4) tetrahedra were observed in beta -SnWO sub(4), confirming previous results. The structural results obtained were supported by the first-principles calculations, suggesting that the second-order Jahn-Teller effect is responsible for octahedral distortion.
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ISSN:0031-8949
1402-4896
DOI:10.1088/0031-8949/89/04/044005