Bloch point nanospheres for the design of magnetic traps

Primer Autor
Vidal-Silva, N
Co-autores
Tejo, F.
Zambrano-Rabanal, C.
Carvalho-Santos, V. L.
Título
Bloch point nanospheres for the design of magnetic traps
Editorial
AIP Publishing
Revista
APPLIED PHYSICS LETTERS
Lenguaje
en
Resumen
Through micromagnetic simulations, this work analyzes the possibility of using an array of magnetic nanospheres hosting Bloch points (BPs) to compose a system with the features of a magnetic trap (MT). We show that a BP can be nucleated as a metastable configuration in a wide range of the nanosphere radius compared to a quasi-uniform and vortex state. We also show that the stabilized BP generates a quadrupolar magnetic field outside the nanosphere. Based on this fact, we analyze the field profile of different arrays of these nanospheres, showing that the obtained magnetic field profiles share the needed features to compose MTs. Some highlights of using an array of Bloch point nanospheres in MTs rely on the magnetic field gradients achieved, which are orders of magnitude higher than similar standard systems, and allow three-dimensional trapping. Our results could be useful in trapping particles through the intrinsic magnetization of ferromagnetic nanoparticles while avoiding the commonly used mechanisms associated with Joule heating.
Fecha Publicación
2023
Tipo de Recurso
artículo original
doi
10.1063/5.0160535
Formato Recurso
PDF
Palabras Claves
micromagnetic simulations
magnetic nanospheres
Mesoscale and Nanoscale Physics
Ubicación del archivo
Categoría OCDE
Física
Materias
simulaciones micromagnéticas
nanoesferas magnéticas
Física de mesoescala y nanoescala
Identificador del recurso (Mandatado-único)
artículo original
Versión del recurso (Recomendado-único)
versión publicada
Derechos de acceso
metadata
Access Rights
metadata
Id de Web of Science
WOS:001063792500009
ISSN
0003-6951
Tipo de ruta
verde
Categoría WOS
Física
Referencia del Financiador (Mandatado si es aplicable-repetible)
ANID-FONDECYT 3220527
INCT-SpinNanoMag
CNPq 406836/2022-1.
CNPQ 305256/2022-0
ANID-FONDECYT APQ-00648-22
CNPQ 11220046
Fapemig
Agencia Nacional de Investigación y Desarrollo (ANID)-FONDECYT 3220527
Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq) 406836/2022-1.
Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq) 305256/2022-0
Agencia Nacional de Investigación y Desarrollo (ANID)-FONDECYT APQ-00648-22
Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq) 11220046
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