Magnetostatic interaction between Bloch point nanospheres

Three-dimensional topological textures have become a topic of intense interest in recent years. This work uses analytical and numerical calculations to determine the magnetostatic field produced by a Bloch point (BP) singularity confined in a magnetic nanosphere. It is observed that BPs hosted in a...

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Bibliographic Details
Published in:Scientific reports 2023-05, Vol.13 (1), p.7171-7171, Article 7171
Main Authors: Zambrano-Rabanal, Cristobal, Valderrama, Boris, Tejo, Felipe, Elías, Ricardo Gabriel, Nunez, Alvaro S., Carvalho-Santos, Vagson L., Vidal-Silva, Nicolás
Format: Article
Language:English
Subjects:
639/301
639/301/119
639/301/119/1001
639/301/119/2793
639/301/119/997
Humanities and Social Sciences
Magnetic fields
multidisciplinary
Science
Science (multidisciplinary)
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Summary:Three-dimensional topological textures have become a topic of intense interest in recent years. This work uses analytical and numerical calculations to determine the magnetostatic field produced by a Bloch point (BP) singularity confined in a magnetic nanosphere. It is observed that BPs hosted in a nanosphere generate magnetic fields with quadrupolar nature. This finding is interesting because it shows the possibility of obtaining quadrupole magnetic fields with just one magnetic particle, unlike other propositions considering arrays of magnetic elements to generate this kind of field. The obtained magnetostatic field allows us to determine the interaction between two BPs as a function of the relative orientation of their polarities and the distance between them. It is shown that depending on the rotation of one BP related to the other, the magnetostatic interaction varies in strength and character, being attractive or repulsive. The obtained results reveal that the BP interaction has a complex behavior beyond topological charge-mediated interaction.
ISSN:2045-2322
2045-2322
DOI:10.1038/s41598-023-34167-y