Synthesis, structural and magnetic characterisation of the fully fluorinated compound 6H-BaFeO2F

Oliver Clemens; Adrian Wright; Frank Berry; Ron Smith; Peter Slater

doi:10.1016/j.jssc.2012.10.017

Synthesis, structural and magnetic characterisation of the fully fluorinated compound 6H-BaFeO₂F

Oliver Clemens, Adrian Wright, Frank Berry, Ron Smith, Peter Slater

Chemistry

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23 Citations (Scopus)

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Abstract

The compound 6H-BaFeO2F (P63/mmc) was synthesised by the low temperature fluorination of 6H-BaFeO3–d using polyvinylidenedifluoride (PVDF) as a fluorination agent. Structural characterisation by XRD and NPD suggests that the local positions of the oxygen and fluorine atoms vary with no evidence for ordering on the anion sites. This compound shows antiferromagnetic ordering at room temperature with antiparallel alignment of the magnetic moments along the c-axis. The use of PVDF also allows the possibility of tuning the fluorine content in materials of composition 6H-BaFeO3–dFy to any value of 0<y≤1. In addition, the oxygen content, and therefore the iron oxidation state, can be tuned by applying different partial pressures of oxygen during the reaction.

Original language	English
Pages (from-to)	262-269
Journal	Journal of Solid State Chemistry
Volume	198
Early online date	25 Oct 2012
DOIs	https://doi.org/10.1016/j.jssc.2012.10.017
Publication status	Published - Feb 2013

Keywords

perovskite
fluorine
neutron diffraction
6H–BaFeO2F
Hexagonal perovskite
Fluorination
PVDF
Magnetic structure

Access to Document

10.1016/j.jssc.2012.10.017

Clemens_2012_6H-BaFeO2F_revised
NOTICE: this is the author’s version of a work that was accepted for publication in Journal of Solid State Chemistry. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Journal of Solid State Chemistry,Volume 198, February 2013, Pages 262–269, DOI 10.1016/j.jssc.2012.10.017. Eligibility for repository : checked 6/08/2014
Accepted author manuscript, 752 KBLicence: Other (please specify with Rights Statement)

Cite this

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title = "Synthesis, structural and magnetic characterisation of the fully fluorinated compound 6H-BaFeO2F",

abstract = "The compound 6H-BaFeO2F (P63/mmc) was synthesised by the low temperature fluorination of 6H-BaFeO3–d using polyvinylidenedifluoride (PVDF) as a fluorination agent. Structural characterisation by XRD and NPD suggests that the local positions of the oxygen and fluorine atoms vary with no evidence for ordering on the anion sites. This compound shows antiferromagnetic ordering at room temperature with antiparallel alignment of the magnetic moments along the c-axis. The use of PVDF also allows the possibility of tuning the fluorine content in materials of composition 6H-BaFeO3–dFy to any value of 0<y≤1. In addition, the oxygen content, and therefore the iron oxidation state, can be tuned by applying different partial pressures of oxygen during the reaction.",

keywords = "perovskite, fluorine, neutron diffraction, 6H–BaFeO2F, Hexagonal perovskite, Fluorination, PVDF, Magnetic structure",

author = "Oliver Clemens and Adrian Wright and Frank Berry and Ron Smith and Peter Slater",

year = "2013",

month = feb,

doi = "10.1016/j.jssc.2012.10.017",

language = "English",

volume = "198",

pages = "262--269",

journal = "Journal of Solid State Chemistry",

issn = "0022-4596",

publisher = "Elsevier",

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TY - JOUR

T1 - Synthesis, structural and magnetic characterisation of the fully fluorinated compound 6H-BaFeO2F

AU - Clemens, Oliver

AU - Wright, Adrian

AU - Berry, Frank

AU - Smith, Ron

AU - Slater, Peter

PY - 2013/2

Y1 - 2013/2

N2 - The compound 6H-BaFeO2F (P63/mmc) was synthesised by the low temperature fluorination of 6H-BaFeO3–d using polyvinylidenedifluoride (PVDF) as a fluorination agent. Structural characterisation by XRD and NPD suggests that the local positions of the oxygen and fluorine atoms vary with no evidence for ordering on the anion sites. This compound shows antiferromagnetic ordering at room temperature with antiparallel alignment of the magnetic moments along the c-axis. The use of PVDF also allows the possibility of tuning the fluorine content in materials of composition 6H-BaFeO3–dFy to any value of 0<y≤1. In addition, the oxygen content, and therefore the iron oxidation state, can be tuned by applying different partial pressures of oxygen during the reaction.

AB - The compound 6H-BaFeO2F (P63/mmc) was synthesised by the low temperature fluorination of 6H-BaFeO3–d using polyvinylidenedifluoride (PVDF) as a fluorination agent. Structural characterisation by XRD and NPD suggests that the local positions of the oxygen and fluorine atoms vary with no evidence for ordering on the anion sites. This compound shows antiferromagnetic ordering at room temperature with antiparallel alignment of the magnetic moments along the c-axis. The use of PVDF also allows the possibility of tuning the fluorine content in materials of composition 6H-BaFeO3–dFy to any value of 0<y≤1. In addition, the oxygen content, and therefore the iron oxidation state, can be tuned by applying different partial pressures of oxygen during the reaction.

KW - perovskite

KW - fluorine

KW - neutron diffraction

KW - 6H–BaFeO2F

KW - Hexagonal perovskite

KW - Fluorination

KW - PVDF

KW - Magnetic structure

U2 - 10.1016/j.jssc.2012.10.017

DO - 10.1016/j.jssc.2012.10.017

M3 - Article

SN - 0022-4596

VL - 198

SP - 262

EP - 269

JO - Journal of Solid State Chemistry

JF - Journal of Solid State Chemistry

ER -