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Structural and Mössbauer study of Sr2FeO3X (X = F, Cl, Br) and the magnetic structure of Sr2FeO3F

Structural and Mössbauer study of Sr2FeO3X (X = F, Cl, Br) and the magnetic structure of Sr2FeO3F
Structural and Mössbauer study of Sr2FeO3X (X = F, Cl, Br) and the magnetic structure of Sr2FeO3F
The structures of Sr2FeO3F, Sr2FeO3Cl and Sr2FeO3Br have been investigated using powder neutron diffraction (PND). All three ferrates crystallise in the primitive tetragonal space group P4/nmm and the anions are fully ordered giving iron oxygen square pyramids separated by rock salt type layers of strontium halide. Fe-57 Mossbauer data have been collected and confirm one iron(iii) site of distorted octahedral geometry in all three structures. Variable temperature PND data have been used to determine the? 2a x 2c magnetic superstructure of Sr2FeO3F.
powder neutron-diffraction, bond-valence parameters, polyhedra, solids, cu
527-532
Hector, Andrew L.
f19a8f31-b37f-4474-b32a-b7cf05b9f0e5
Hutchings, John A.
92e7d56c-e221-4906-a999-b95e69e7f0d2
Needs, Richard L.
66c56851-3b2a-4e4b-800e-d9acaa21a3bd
Thomas, Michael F.
4aabc9a3-b0ec-49df-a5f1-a1d5c8554b22
Weller, Mark T.
36a60b56-049f-466c-a1d7-39d6b0d85ff4
Hector, Andrew L.
f19a8f31-b37f-4474-b32a-b7cf05b9f0e5
Hutchings, John A.
92e7d56c-e221-4906-a999-b95e69e7f0d2
Needs, Richard L.
66c56851-3b2a-4e4b-800e-d9acaa21a3bd
Thomas, Michael F.
4aabc9a3-b0ec-49df-a5f1-a1d5c8554b22
Weller, Mark T.
36a60b56-049f-466c-a1d7-39d6b0d85ff4

Hector, Andrew L., Hutchings, John A., Needs, Richard L., Thomas, Michael F. and Weller, Mark T. (2001) Structural and Mössbauer study of Sr2FeO3X (X = F, Cl, Br) and the magnetic structure of Sr2FeO3F. Journal of Materials Chemistry, 11 (2), 527-532. (doi:10.1039/b008321f).

Record type: Article

Abstract

The structures of Sr2FeO3F, Sr2FeO3Cl and Sr2FeO3Br have been investigated using powder neutron diffraction (PND). All three ferrates crystallise in the primitive tetragonal space group P4/nmm and the anions are fully ordered giving iron oxygen square pyramids separated by rock salt type layers of strontium halide. Fe-57 Mossbauer data have been collected and confirm one iron(iii) site of distorted octahedral geometry in all three structures. Variable temperature PND data have been used to determine the? 2a x 2c magnetic superstructure of Sr2FeO3F.

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Published date: 2001
Keywords: powder neutron-diffraction, bond-valence parameters, polyhedra, solids, cu
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Identifiers

Local EPrints ID: 19518
URI: http://eprints.soton.ac.uk/id/eprint/19518
DOI: doi:10.1039/b008321f
PURE UUID: 933705d5-4870-41d7-b2c8-4a5555336f13
ORCID for Andrew L. Hector: ORCID iD orcid.org/0000-0002-9964-2163

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Date deposited: 16 Feb 2006
Last modified: 16 Mar 2024 02:53

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Contributors

Author: Andrew L. Hector ORCID iD
Author: John A. Hutchings
Author: Richard L. Needs
Author: Michael F. Thomas
Author: Mark T. Weller

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