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Title
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Structural chemistry and magnetic properties of the perovskite
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Author
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Abstract
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| A polycrystalline sample of perovskite-like Sr3Fe2TeO9 has been prepared in a solid-state reaction and studied by a combination of electron microscopy, Mossbauer spectroscopy, magnetometry, X-ray diffraction and neutron diffraction. The majority of the reaction product is shown to be a trigonal phase with a 2:1 ordered arrangement of Fe3+ and Te6+ cations. However, the sample is prone to nano twinning and tetragonal domains with a different pattern of cation ordering exist within many crystallites. Antiferromagnetic ordering exists in the trigonal phase at 300 K and Sr3Fe2TeO9 is thus the first example of a perovskite with 2:1 trigonal cation ordering to show long-range magnetic order. At 300 K the antiferromagnetic phase coexists with two paramagnetic phases which show spin -glass behaviour below similar to 80 K. (C) 2016 The Authors. Published by Elsevier Inc. |
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Language
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English
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Source (journal)
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Journal of solid state chemistry. - London
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Publication
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London
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2016
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ISSN
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0022-4596
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DOI
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10.1016/J.JSSC.2016.06.024
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Volume/pages
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242
:1
(2016)
, p. 86-95
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ISI
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000382429600012
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Full text (Publisher's DOI)
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Full text (open access)
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Full text (publisher's version - intranet only)
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