ISIS Neutron and Muon Source Data Journal

Chemically Tailorable Frustrated Systems:Magnetic order of isostructural A2M2(C2O4)F4 (A=NH4+, Cs+) (M=Co2+, Mn2+)

Abstract: This proposal forms part of an exploratory study of new mixed anion coordination compounds, in particular oxalate-fluorides, which are anticipated to have frustrated magnetic properties due to competing interactions. Two of these compounds have composition A2M2(C2O4)F4, where A =NH4 or Cs; M = Co or Mn. They have a complex crystal structure based on a 'corrugated' square metal fluoride net, bridged by oxalate anions. The NH4/Co and Cs/Mn samples are isostructural at ambient T, but the former shows a structural transiton around 100K, which apparently correlates with an abrupt change in magnetic susceptibility. In contrast, the Cs/Mn sample shows a transition to long-range magnetic order near 70 K, without a structural phase transition. The aim of this experiment is to probe the magnetic ordering of both samples, in order to correlate this with thedifferences in composition and structure

Principal Investigator: Professor Philip Lightfoot
Experimenter: Miss Ceng Han
Local Contact: Dr Ronald Smith
Experimenter: Mr Alasdair Bradford
Experimenter: Professor Stephen Lee
Experimenter: Mr Teng Li

DOI: 10.5286/ISIS.E.RB2010423

ISIS Experiment Number: RB2010423

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:
Professor Philip Lightfoot et al; (2020): Chemically Tailorable Frustrated Systems:Magnetic order of isostructural A2M2(C2O4)F4 (A=NH4+, Cs+) (M=Co2+, Mn2+), STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB2010423

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