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The limit to realize an isolated magnetic single skyrmionic state

Devi, MM and Koshibae, W and Sharma, G and Tomar, R and Gaikwad, VM and Varma, RM and Nair, MN and Jha, M and Sarma, DD and Chatterjee, R and Ganguli, AK and Chakraverty, S (2019) The limit to realize an isolated magnetic single skyrmionic state. In: Journal of Materials Chemistry C, 7 (5). pp. 1337-1344.

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Official URL: https://doi.org/10.1039/c8tc03968b


The physical properties of a nanoparticle change drastically when the particle size approaches the length scale of the relevant order parameter. Herein, we demonstrate the ferrimagnetic ground state of Cu 2 OSeO 3 nanoparticles, which is otherwise a chiral magnet (including large-size skyrmionic spin texture) in its bulk form. Theoretical studies suggest that such a pure ferrimagnetic ground state in this material (with low Dzyaloshinskii-Moriya interaction to Heisenberg interaction ratio) is possible only in the presence of magneto-crystalline anisotropy energy when the confinement size approaches the skyrmion size (∼50 nm in bulk). These observations suggest the limit to realize an isolated single skyrmion.

Item Type: Journal Article
Publication: Journal of Materials Chemistry C
Publisher: Royal Society of Chemistry
Additional Information: The copyright for this article belongs to the Royal Society of Chemistry.
Keywords: Copper compounds; Ferrimagnetism; Ground state; Nanometals; Nanoparticles; Particle size; Selenium compounds; Textures, Chiral magnets; Dzyaloshinskii-Moriya interaction; Heisenberg interaction; Length scale; Order parameter; Spin textures; Theoretical study, Nanomagnetics
Department/Centre: Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Date Deposited: 23 Nov 2022 05:33
Last Modified: 23 Nov 2022 05:33
URI: https://eprints.iisc.ac.in/id/eprint/78008

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