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Investigations of the size distribution and magnetic properties of nanoparticles of Cu2OSeO3

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Holt, S. J. R., Štefančič, Aleš, Loudon, James, Lees, Martin R. and Balakrishnan, Geetha (2021) Investigations of the size distribution and magnetic properties of nanoparticles of Cu2OSeO3. Materials Research Express, 8 (11). 116101. doi:10.1088/2053-1591/ac3aa8 ISSN 2053-1591.

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Official URL: https://doi.org/10.1016/j.trgeo.2021.100705

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Abstract

Abstract Skyrmions in confined geometries have been a subject of increasing interest due to the different properties that they exhibit compared to their bulk counterparts. In this study, nanoparticles of skyrmion-hosting Cu2OSeO3 have been synthesised using a precipitation method followed by thermal treatment. This enables us to produce nanoparticles whose mean size varies from tens of nanometers to a few micrometers by varying the temperature and duration of the thermal decomposition of the precursor. These sizes span the ∼ 63 nm diameter of skyrmions in Cu2OSeO3, allowing investigations into how the magnetic state changes when the size of the geometrical confinement is similar to and smaller than the size of an isolated magnetic skyrmion. AC susceptibility measurements performed on nanoparticles with a size distribution from 15 to 250 nm show a change in the magnetic phase diagram compared to bulk Cu2OSeO3.

Item Type: Journal Article
Subjects: Q Science > QC Physics
T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Faculty of Science, Engineering and Medicine > Science > Physics
SWORD Depositor: Library Publications Router
Library of Congress Subject Headings (LCSH): Skyrme model, Nanoparticles -- Magnetic properties, Magnetic materials
Journal or Publication Title: Materials Research Express
Publisher: IOP Publishing
ISSN: 2053-1591
Official Date: 26 November 2021
Dates:
DateEvent
26 November 2021Published
17 November 2021Accepted
Volume: 8
Number: 11
Article Number: 116101
DOI: 10.1088/2053-1591/ac3aa8
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Open Access (Creative Commons)
Date of first compliant deposit: 8 February 2022
Date of first compliant Open Access: 9 February 2022
RIOXX Funder/Project Grant:
Project/Grant IDRIOXX Funder NameFunder ID
EP/N032128/1[EPSRC] Engineering and Physical Sciences Research Councilhttp://dx.doi.org/10.13039/501100000266

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