ISIS Neutron and Muon Source Data Journal

Evolution of the interface magnetism in bi-magnetic core/shell nanoparticles (Fe3O4/Mn3O4) with antiferromagnetic interface coupling

Abstract: Bi-magnetic core/shell nanoparticles with an antiferromagnetic interface present very interesting properties. At high fields the antiferromagnetic coupling is overcome and the shell magnetization rotates so that the core and the shell align ferromagnetically. Simulations show that this induces an inhomogeneous magnetization at the interface. Here we propose to carry out a half-polarized SANS study of Fe3O4/Mn3O4 core/shell nanoparticles with antiferromagnetic interface coupling at different fields. (0-3 T) at 100 K and 10 K [TC(Mn3O4)=45 K]. The results will allow us to study the evolution of the spin arrangement of the core, shell and interface as the magnetization of the shell rotates for increasing fields. These results will allow us to understand the microscopic effects of the antiferromagnetic interface coupling in core/shell nanoparticles.

Principal Investigator: Professor Josep Nogués Sanmiquel
Experimenter: Dr Alex Gómez Roca
Experimenter: Dr Alberto Lopez
Experimenter: Mrs Marta Estrader
Local Contact: Dr Dirk Honecker
Experimenter: Dr Josep Nogues

DOI: 10.5286/ISIS.E.RB2210068

ISIS Experiment Number: RB2210068

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 Josep Nogués Sanmiquel et al; (2022): Evolution of the interface magnetism in bi-magnetic core/shell nanoparticles (Fe3O4/Mn3O4) with antiferromagnetic interface coupling, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB2210068

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