Nuclear and magnetic structures of K2NiF4-type iron(III) oxide halides
Nuclear and magnetic structures of K2NiF4-type iron(III) oxide halides
K2NiF4-type iron(III) oxides show a very common form of magnetic ordering, XY antiferromagnetic ordering within the layers combined with layer stacking based on alignment of spins in alternate layers. The Ising antiferromagnet Ca2MnO4 has been reported to have a doubled c-axis (ca 24A°) in the magnetic structure and we have found a similar stacking in the XY antiferromagnet Sr2FeO3F. We show here that this unusual c-axis doubling is related to the exposure of the material to air and suggest that in both Sr2FeO3F and Ca2MnO4 it may be related to the occupation of interstitial sites.
37-42
Hector, Andrew L.
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MacDonald, Alexander I.
2e53f500-be9c-4c5b-be14-feac402d3bf0
Price, Daniel J.
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Weller, Mark T.
36a60b56-049f-466c-a1d7-39d6b0d85ff4
2003
Hector, Andrew L.
f19a8f31-b37f-4474-b32a-b7cf05b9f0e5
MacDonald, Alexander I.
2e53f500-be9c-4c5b-be14-feac402d3bf0
Price, Daniel J.
479ee5e3-2626-4abe-bffa-679d77ba5192
Weller, Mark T.
36a60b56-049f-466c-a1d7-39d6b0d85ff4
Hector, Andrew L., MacDonald, Alexander I., Price, Daniel J. and Weller, Mark T.
(2003)
Nuclear and magnetic structures of K2NiF4-type iron(III) oxide halides.
Solid-State Chemistry of Inorganic Materials IV, , Boston, MA, United States.
02 - 06 Dec 2002.
.
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Conference or Workshop Item
(Paper)
Abstract
K2NiF4-type iron(III) oxides show a very common form of magnetic ordering, XY antiferromagnetic ordering within the layers combined with layer stacking based on alignment of spins in alternate layers. The Ising antiferromagnet Ca2MnO4 has been reported to have a doubled c-axis (ca 24A°) in the magnetic structure and we have found a similar stacking in the XY antiferromagnet Sr2FeO3F. We show here that this unusual c-axis doubling is related to the exposure of the material to air and suggest that in both Sr2FeO3F and Ca2MnO4 it may be related to the occupation of interstitial sites.
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Published date: 2003
Venue - Dates:
Solid-State Chemistry of Inorganic Materials IV, , Boston, MA, United States, 2002-12-02 - 2002-12-06
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Local EPrints ID: 491735
URI: http://eprints.soton.ac.uk/id/eprint/491735
PURE UUID: 786caf95-3946-4e79-8779-0cfb686b4f77
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Date deposited: 03 Jul 2024 16:57
Last modified: 11 Jul 2024 01:37
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Author:
Alexander I. MacDonald
Author:
Daniel J. Price
Author:
Mark T. Weller
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