ISIS Neutron and Muon Source Data Journal

Multiferroic (Ferroelastic/Magnetic) Phase Transitions in KMnF3

Abstract: KMnF3 perovskite undergoes 3 structural, and two magnetic phase transitions on cooling from 300 K to 2 K. Above 185 K the compound is in the aristotype structure, on cooling below 185 K it undergoes a weakly first order zone boundary phase transition to a structure in space group I4/mcm with Glazer symbol a0a0c-. At the Neel temperature (87 K) it undergoes a second weakly first order transition to an as yet uncharacterised phase, probably space group Cmcm. At 82 K it undergoes a second magnetic/structural transition to another uncharacterised phase, probably in space group Pnma. We propose to carry out a full structural and magnetic characterisation of the 4 phases of KMnF3 including the evolution of the spontaneous strains and the nature of the phase coexistence in the first order transitions on heating and cooling.

Principal Investigator: Dr Kevin Knight
Principal Investigator: Dr Kevin Knight

DOI: 10.5286/ISIS.E.RB1510005

ISIS Experiment Number: RB1510005

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 Kevin Knight et al; (2015): Multiferroic (Ferroelastic/Magnetic) Phase Transitions in KMnF3, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB1510005

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