Perovskite-Related Oxide Fluorides: The Use of Mössbauer Spectroscopy in the Investigation of Magnetic Properties

We review here some of our recent work on the synthesis and characterisation of new perovskite-related oxide fluorides. We demonstrate the use of low temperature fluorination methods for the preparation of new phases with high fluorine contents. We also show how fluorine can be accommodated in diffe...

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Bibliographic Details
Published in:Croatica Chemica Acta 2015-12, Vol.88 (4), p.339-346
Main Authors: Berry, Frank J, Greaves, Colin, Gurusinghe, Nicola N.M, Hancock, Cathryn, Slater, Peter, Thomas, Michael F, Marco, Jose F
Format: Article
Language:English
Subjects:
Chemical properties
Fluorides
Fluorination
Fluorine
Magnetic properties
Magnetism
Methods
Mössbauer spectroscopy
Observations
Oxidation
oxide fluorides
Oxides
Spectrum analysis
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Summary:We review here some of our recent work on the synthesis and characterisation of new perovskite-related oxide fluorides. We demonstrate the use of low temperature fluorination methods for the preparation of new phases with high fluorine contents. We also show how fluorine can be accommodated in different sites according to the structural details of the initial oxide and the fluorine content. Importantly, we describe how Mossbauer spectroscopy is a powerful technique for monitoring changes in cation oxidation state as a result of fluorination and for examining the complex magnetic interactions which result from the accommodation of fluorine within the structures and how these can be related to structural properties and changes to the superexchange pathways. Keywords: oxide fluorides, Mossbauer spectroscopy, magnetism.
ISSN:0011-1643
1334-417X
DOI:10.5562/cca2695