Reply to “Structural and magnetic behavior of the cubic oxyfluoride SrFeO{sub 2}F studied by neutron diffraction”

Journal Article · Sun Mar 15 00:00:00 EDT 2015 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1016/J.JSSC.2015.02.022· OSTI ID:22475671

Clemens, Oliver ^[1]; Berry, Frank J.; Wright, Adrian J. ^[2]; Knight, Kevin S. ^[3]; Perez-Mato, J. M.; Igartua, J. M. ^[4]; Slater, Peter R. ^[2]

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1. Technische Universität Darmstadt, Joint Research Laboratory Nanomaterials, Jovanka-Bontschits-Straße 2, 64287 Darmstadt (Germany)
2. School of Chemistry, The University of Birmingham, Birmingham B15 2TT (United Kingdom)
3. ISIS Facility, Rutherford Appleton Laboratory, Harwell Oxford, Didcot OX11 0QX (United Kingdom)
4. Departamentos de Física de la Materia Condensada y Física Aplicada II, Facultad de Ciencia y Tecnología, Universidad del País Vasco (UPV/EHU), Apdo. 644, 48080 Bilbao (Spain)

In this article we comment on the results published by Thompson et al. (, J. Solid State Chem. 219 (2014) 173–178) on the crystal structure of SrFeO{sub 2}F, who claim the compound to crystallize in the cubic space group Pm-3m. We give a more detailed explanation of the determination of our previously reported structural model with Imma symmetry (Clemens et al., J. Solid State Chem. 206 (2013) 158–169), with addition of variable temperature XRD measurements with high counting time to provide unambiguous evidence for the Imma model being correct for our sample. - Graphical abstract: The crystal structure of SrFeO{sub 2}F is discussed with regards to previous reports. - Highlights: • SrFeO{sub 2}F was synthesized by polymer based fluorination of SrFeO{sub 3}. • Evaluation of the diffraction data shows a pseudocubic cell metric. • Superstructure reflections at low d-spacings indicate deviation from cubic symmetry. • The phase transition temperature from orthorhombic to cubic was determined using variable temperature X-ray diffraction. • Results published by Thompson et al. are critically discussed with respect to those observations.

• OSTI ID: 22475671
• Journal Information: Journal of Solid State Chemistry, Vol. 226; Other Information: Copyright (c) 2015 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 0022-4596
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
FLUORINATION
ION MICROPROBE ANALYSIS
IRON COMPOUNDS
NEUTRON DIFFRACTION
ORTHORHOMBIC LATTICES
OXYFLUORIDES
PEROVSKITE
PHASE TRANSFORMATIONS
POLYMERS
REFLECTION
SOLIDS
STRONTIUM COMPOUNDS
STRUCTURAL MODELS
TEMPERATURE DEPENDENCE
TETRAGONAL LATTICES
TRANSITION TEMPERATURE
X-RAY DIFFRACTION