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Article Abstract
The formation and characteristics of magnetic skyrmions are strongly governed by the symmetry of the underlying crystal structure. In this study, we report the discovery of a new trigonal polymorph of CuOSeO, observed exclusively in nanoparticles. Electron diffraction and density functional theory calculations confirm its R3m space group, sharing C symmetry with Néel-type skyrmion hosts. This polymorph is likely stabilized by surface effects, suggesting that size-induced structural changes may drive a transformation from Bloch-type to Néel-type skyrmions in CuOSeO. This hypothesis could be consistent with prior unexplained observations of Néel-type skyrmions at the surfaces of bulk crystals, which may result from surface-specific structural distortions. Overall, these findings provide insights into the interplay between size, structure, and magnetism, opening pathways for controlling skyrmionic properties in nanoscale systems.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC12397362 | PMC |
| http://dx.doi.org/10.1038/s41598-025-15886-w | DOI Listing |
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