ISIS Neutron and Muon Source Data Journal

Determining the Néel and Brownian relaxation times in Co-Mn mixed ferrite nanoparticles

Abstract: Cancer treatment by magnetic hyperthermia using superparamagnetic nanoparticles (SPM NPs) is in great attention in recent years. Unfortunately, there is no explicit dependence of the heating performance of NPs on the size, shape, or chemical composition. Nevertheless, all aspects modify the anisotropy constant, which is a crucial parameter to determine the Néel relaxation - one of the processes of heat generation by the SPM NPs. Half-polarized small-angle neutron experiments enable us to access the spatially resolved effective anisotropy constant and give us access to the hydrodynamic size of NPs, which are crucial parameters to determine Néel and Brownian relaxation times, respectively. Thus this study aims to unveil the magnetic structure of SPM NPs and correlate it with the magnetic NPs' heating performance.

Experimenter: Mr Bruno Rafael Soto Kufoy
Local Contact: Dr Dirk Honecker
Experimenter: Dr Marianna Gerina
Experimenter: Mr ?tefan Hricov
Experimenter: Dr Dominika Zakutna

DOI: 10.5286/ISIS.E.RB2310314

ISIS Experiment Number: RB2310314

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:
Mr Bruno Rafael Soto Kufoy et al; (2023): Determining the Néel and Brownian relaxation times in Co-Mn mixed ferrite nanoparticles, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB2310314

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