ISIS Neutron and Muon Source Data Journal

magnetic excitation in square lattice 2D heisenberg antiferromagnet Sr3Fe2O6.5

Abstract: Oxygen doping in Sr3Fe2O7-x is of special interest because it allows us to continuously tunethe magnetic interactions and dimensionality in a strongly correlated system. strongly correlatedsystem. The observed change in the ordered magnetic structure, from the helicalincommensurate (for x=0.0) to the commensurate (with k = (0, 0, 1) for x = 0.5), with oxygen doping confirms a change in the nature of the exchange interactions. In addition, the crystal structure for Sr3Fe2O6.5 changes from orthogonal to tetragonal upon heating to 335 K and the compound does?t order magnetically, if it is quenched to 2 K (from 335 K), which we believe is due to the fact that system is now 2D Heisenberg AFM (the bridging oxygen connecting the two Fe layers is disordered). We plan to measure the magnetic excitation in this magnetically disordered sate using the MERLIN TOF spectrometer.

Principal Investigator: Dr Anil Jain
Experimenter: Dr Devashi Adroja
Experimenter: Mr Maximilian Josef Krautloher
Local Contact: Dr Helen Walker
Experimenter: Professor Bernhard Keimer

DOI: 10.5286/ISIS.E.RB1520329

ISIS Experiment Number: RB1520329

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 Anil Jain et al; (2015): magnetic excitation in square lattice 2D heisenberg antiferromagnet Sr3Fe2O6.5, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB1520329

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