ISIS Neutron and Muon Source Data Journal

Investigation of magnetic structure of the linear magnetoelectric Sm2BaCuO5 by Neutron Diffraction

Abstract: We observed linear magnetoelectric effect for the fist time in one of the well known green phases Sm2BaCuO5 which was seen as a secondary phase in the early synthesis of SmBa2Cu3O7 superconductor. Based on symmetry consideration of its isostructural compounds, we suggest k=0 magnetic structure. However, it is important to verify this hypothesis by performing neutron diffraction measurements and determine the magnetic structure of this compound. This compound exhibits two magnetic transitions, one at TN1=23 K and another at 5 K. Theses transitions are associated with antiferromagnetic ordering of Cu^{2+} and Sm^{3+} ions, respectively. The linear magnetoelectric effect occurs at TN1 with large magnetoelectric coefficient 44 ps/m. Therefore, the magnetic structure is very important to understand the origin of ME effect and also to understand the 4f-3d interactions.

Principal Investigator: Professor Athinarayanan Sundaresan
Local Contact: Dr Fabio Orlandi
Experimenter: Dr Premakumar Yanda
Experimenter: Dr Pascal Manuel
Experimenter: Mr Ravishankar Pala Narayana Swamy

DOI: 10.5286/ISIS.E.RB2000028

ISIS Experiment Number: RB2000028

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 Athinarayanan Sundaresan et al; (2019): Investigation of magnetic structure of the linear magnetoelectric Sm2BaCuO5 by Neutron Diffraction, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB2000028

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