ISIS Neutron and Muon Source Data Journal
This is a page describing data taken during an experiment at the ISIS Neutron and Muon Source. Information about the ISIS Neutron and Muon Source can be found at https://www.isis.stfc.ac.uk.
Resolving the inhomogeneous spin structure of magnetic nanoflowers
Abstract: In recent years, the field of nanomagnetism has benefited from magnetic defects to expand the limits of knowledge and applications. However, there are fundamental research questions still to be addressed to leverage the potentialities of defect-induced spin disorder. Magnetic hyperthermia (MHT), based on the heat release of nanoparticles (NPs) to deactivate cancerous cells, requires larger specific absorption rates to improve the therapeutic efficiency. In this context, spin disorder emerges as a game changer. Using polarized SANS with uniaxial polarization analysis, we will picture the inhomogeneous spin structure of maghemite nanoflowers, one of the best candidates for MHT, connecting the internal spin disorder to their excellent MHT performance. We will measure nanoflowers with sizes between about 50-200 nm, which consist of a multi-grain structure where the inter-grain boundaries deliver the internal disorder, capturing their inhomogeneous magnetic arrangement (presumed to be vortex-like) and connecting their disordered microstructure to their outstanding heat release performance. The polarized neutron data analysis will be accompanied by numerical micromagnetic simulations.
Principal Investigator: Dr Elizabeth Martín Jefremovas
Experimenter: Dr Alvaro Gallo Cordova
Experimenter: Professor Andreas Michels
Experimenter: Professor Dame Maria del Puerto Morales
Local Contact: Dr Diego Alba Venero
Experimenter: Mr Micha? Piotr Dembski-Villalta
Experimenter: Dr Dirk Honecker
Experimenter: Dr Sebastian Mühlbauer
Experimenter: Dr Valmir Antonio Chitta
Experimenter: Dr Venus Rai
DOI: 10.5286/ISIS.E.RB2520322
ISIS Experiment Number: RB2520322
| Part DOI | Instrument | Public release date | Download Link |
|---|---|---|---|
| 10.5286/ISIS.E.RB2520322-1 | ZOOM | 06 October 2029 | Download |
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 Elizabeth Martín Jefremovas et al; (2026): Resolving the inhomogeneous spin structure of magnetic nanoflowers, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB2520322
Data is released under the CC-BY-4.0 license.
