ISIS Neutron and Muon Source Data Journal

Uncovering the magnetic structures of geometrically frustrated layered iron oxofluorophosphates

Abstract: KFe(PO3F)2 and (NH4)2Fe(PO3F)2Cl are two new representatives of the layered iron oxofluorophosphate family AFe(PO3F)2 (A = K, NH4, (NH4)2Cl). Their crystal structures comprise different cationic buffers between Fe(PO3F)2 layers in which Fe atoms form equilateral triangular sublattices. Magnetization measurements indicate antiferromagnetic interactions and supressed magnetic order. The latter arises from the combination of low dimensionality and the geometrically frustrated Fe sublattice. Despite significantly different interlayer distances, both compounds order at comparable temperatures around 3 K suggesting possible unconventional exchange interactions. Since complex incommensurate magnetic structures are expected as their ground states, neutron powder diffraction using the high-resolution cold neutron diffractometer WISH will help to uncover their magnetic structures.

Principal Investigator: Dr Katharina Verena Dorn
Local Contact: Dr Ivan da Silva Gonzalez
Experimenter: Professor Anja-Verena Mudring
Experimenter: Ms Stefanie Siebeneichler

DOI: 10.5286/ISIS.E.RB2010212

ISIS Experiment Number: RB2010212

Publisher: STFC ISIS Neutron and Muon Source

Data format: RAW/Nexus
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Data Citation

The recommended format for citing this dataset in a research publication is as:
[author], [date], [title], [publisher], [doi]

For Example:
Dr Katharina Verena Dorn et al; (2020): Uncovering the magnetic structures of geometrically frustrated layered iron oxofluorophosphates, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB2010212

Data is released under the CC-BY-4.0 license.