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  4. Tuning Topological Spin Textures in Size-Tailored Chiral Magnet Insulator Particles
 
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research article

Tuning Topological Spin Textures in Size-Tailored Chiral Magnet Insulator Particles

Baral, Priya R.  
•
Ukleev, Victor
•
LaGrange, Thomas  
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July 7, 2022
Journal Of Physical Chemistry C

Topological spin textures such as skyrmions hold high potential for use as magnetically active elements in diverse near-future applications. While skyrmions in metallic multilayers attract great attention in this context, unleashing the myriad potential of skyrmions for various applications requires the discovery and customization of alternative host system paradigms. Here, we developed and applied a chemical method to synthesize octahedral particles of the chiral insulating skyrmion host Cu2OSeO3 with both narrow size distribution and tailored dimensions approaching the nanoscale. Combining magnetometry and neutron scattering experiments with micromagnetic simulations, we show that the bulk phase diagram of Cu2OSeO3 changes dramatically below octahedral heights of 400 nm. Further, particle size-dependent regimes are identified where various topological spin textures such as skyrmions, merons, and bobbers can stabilize, prior to a lower critical octahedral height of ~190 nm below which no topological spin texture is found stable. These findings suggest conditions under which sparse topological spin textures confined to chiral magnet nanoparticles can be stable and provide fresh potential for insulator-based application paradigms.

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Type
research article
DOI
10.1021/acs.jpcc.2c03600
Web of Science ID

WOS:000827549600001

Author(s)
Baral, Priya R.  
•
Ukleev, Victor
•
LaGrange, Thomas  
•
Cubitt, Robert
•
Zivkovic, Ivica  
•
Ronnow, Henrik M.  
•
White, Jonathan S.
•
Magrez, Arnaud  
Date Issued

2022-07-07

Published in
Journal Of Physical Chemistry C
Volume

126

Issue

28

Start page

11855

End page

11866

Subjects

Chemistry, Physical

•

Nanoscience & Nanotechnology

•

Materials Science, Multidisciplinary

•

Chemistry

•

Science & Technology - Other Topics

•

Materials Science

•

skyrmion lattice

•

transition

Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
C3MP  
IPHYS-CGCP  
Available on Infoscience
August 1, 2022
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/189637
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