Critical reexamination of resonant soft x-ray Bragg forbidden reflections in magnetite

S.B. Wilkins, S. Matteo, Di, T.A.W. Beale, Y. Joly, C. Mazzoli, P.D. Hatton, P. Bencok, F. Yakhou, V.A.M. Brabers

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Abstract

Magnetite, Fe3 O4, displays a highly complex low-temperature crystal structure that may be charge and orbitally ordered. Many of the recent experimental claims of such ordering rely on resonant soft x-ray diffraction at the oxygen K and iron L edges. We have reexamined this system and undertaken soft x-ray diffraction experiments on a high-quality single crystal. Contrary to previous claims in the literature, we show that the intensity observed at the Bragg forbidden (00 1 2) c reflection can be explained purely in terms of the low-temperature structural displacements around the resonant atoms. This does not necessarily mean that magnetite is not charge or orbitally ordered but rather that the present sensitivity of resonant soft x-ray experiments does not allow conclusive demonstration of such ordering.
Original languageEnglish
Article number201102
Pages (from-to)201102-1/4
JournalPhysical Review B
Volume79
Issue number20
DOIs
Publication statusPublished - 2009

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Ferrosoferric Oxide
Magnetite
magnetite
x ray diffraction
X rays
Diffraction
x rays
iron
crystal structure
sensitivity
single crystals
oxygen
Demonstrations
Iron
Crystal structure
Experiments
Single crystals
Oxygen
atoms
Atoms

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Wilkins, S. B., Matteo, Di, S., Beale, T. A. W., Joly, Y., Mazzoli, C., Hatton, P. D., ... Brabers, V. A. M. (2009). Critical reexamination of resonant soft x-ray Bragg forbidden reflections in magnetite. Physical Review B, 79(20), 201102-1/4. [201102]. https://doi.org/10.1103/PhysRevB.79.201102
Wilkins, S.B. ; Matteo, Di, S. ; Beale, T.A.W. ; Joly, Y. ; Mazzoli, C. ; Hatton, P.D. ; Bencok, P. ; Yakhou, F. ; Brabers, V.A.M. / Critical reexamination of resonant soft x-ray Bragg forbidden reflections in magnetite. In: Physical Review B. 2009 ; Vol. 79, No. 20. pp. 201102-1/4.
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abstract = "Magnetite, Fe3 O4, displays a highly complex low-temperature crystal structure that may be charge and orbitally ordered. Many of the recent experimental claims of such ordering rely on resonant soft x-ray diffraction at the oxygen K and iron L edges. We have reexamined this system and undertaken soft x-ray diffraction experiments on a high-quality single crystal. Contrary to previous claims in the literature, we show that the intensity observed at the Bragg forbidden (00 1 2) c reflection can be explained purely in terms of the low-temperature structural displacements around the resonant atoms. This does not necessarily mean that magnetite is not charge or orbitally ordered but rather that the present sensitivity of resonant soft x-ray experiments does not allow conclusive demonstration of such ordering.",
author = "S.B. Wilkins and {Matteo, Di}, S. and T.A.W. Beale and Y. Joly and C. Mazzoli and P.D. Hatton and P. Bencok and F. Yakhou and V.A.M. Brabers",
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Wilkins, SB, Matteo, Di, S, Beale, TAW, Joly, Y, Mazzoli, C, Hatton, PD, Bencok, P, Yakhou, F & Brabers, VAM 2009, 'Critical reexamination of resonant soft x-ray Bragg forbidden reflections in magnetite', Physical Review B, vol. 79, no. 20, 201102, pp. 201102-1/4. https://doi.org/10.1103/PhysRevB.79.201102

Critical reexamination of resonant soft x-ray Bragg forbidden reflections in magnetite. / Wilkins, S.B.; Matteo, Di, S.; Beale, T.A.W.; Joly, Y.; Mazzoli, C.; Hatton, P.D.; Bencok, P.; Yakhou, F.; Brabers, V.A.M.

In: Physical Review B, Vol. 79, No. 20, 201102, 2009, p. 201102-1/4.

Research output: Contribution to journalArticleAcademicpeer-review

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AB - Magnetite, Fe3 O4, displays a highly complex low-temperature crystal structure that may be charge and orbitally ordered. Many of the recent experimental claims of such ordering rely on resonant soft x-ray diffraction at the oxygen K and iron L edges. We have reexamined this system and undertaken soft x-ray diffraction experiments on a high-quality single crystal. Contrary to previous claims in the literature, we show that the intensity observed at the Bragg forbidden (00 1 2) c reflection can be explained purely in terms of the low-temperature structural displacements around the resonant atoms. This does not necessarily mean that magnetite is not charge or orbitally ordered but rather that the present sensitivity of resonant soft x-ray experiments does not allow conclusive demonstration of such ordering.

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Wilkins SB, Matteo, Di S, Beale TAW, Joly Y, Mazzoli C, Hatton PD et al. Critical reexamination of resonant soft x-ray Bragg forbidden reflections in magnetite. Physical Review B. 2009;79(20):201102-1/4. 201102. https://doi.org/10.1103/PhysRevB.79.201102