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Full Record Details
Persistent URL
http://purl.org/net/epubs/work/65418
Record Status
Checked
Record Id
65418
Title
Synthesis, structural and magnetic characterisation of the fluorinated compound 15R-BaFeO2F
Contributors
O Clemens (Birmingham U.)
,
FJ Berry (Birmingham U.)
,
J Bauer (Universität des Saarlandes)
,
AJ Wright (Birmingham U.)
,
KS Knight (STFC Rutherford Appleton Lab.)
,
PR Slater (Birmingham U.)
Abstract
The compounds 15R-BaFeO2F and 15R-BaFeO2.27F0.5 have been synthesised by the low temperature fluorination of 15R-BaFeO3-dF0.2 using polyvinylidenedifluoride (PVDF) as a fluorination agent. The materials have been structurally characterised by Rietveld analysis of the X-ray- and HRPD- powder neutron diffraction data. A detailed analysis of bond valence sums suggests that the oxide and fluoride ions order on the different anion sites. A reinvestigation of our recently published structure (Clemens, Wright, Berry, et al., 2013) of 6H-BaFeO2F is also reported and incorporation of fluoride in h-type layers is also confirmed in this compound. The magnetic moments for 15R-BaFeO2F and 15R-BaFeO2.25F0.5 align in the a/b-plane with antiferromagnetic alignment of the moments between adjacent layers, and are flipped by 90° as compared to the precursor compound. 15R-BaFeO2F exhibits very robust antiferromagnetism with a Néel temperature between 300 and 400 °C.
Organisation
ISIS
,
ISIS-HRPD
,
STFC
Keywords
Funding Information
Related Research Object(s):
10.5286/ISIS.E.24089629
Licence Information:
Language
English (EN)
Type
Details
URI(s)
Local file(s)
Year
Journal Article
J Solid State Chem
203 (2013): 218-226.
doi:10.1016/j.jssc.2013.04.031
2013
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