Impact of core-shell dipolar interaction on magnetic phases of spherical core-shell nanoparticles

Carriço, Artur da Silva; Medeiros Filho, F. C.; Oliveira, L. L.; Pedrosa, S. S.; Rebouças, G. O. G.; Dantas, Ana L.

Impact of core-shell dipolar interaction on magnetic phases of spherical core-shell nanoparticles

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dc.contributor.author	Carriço, Artur da Silva
dc.contributor.author	Medeiros Filho, F. C.
dc.contributor.author	Oliveira, L. L.
dc.contributor.author	Pedrosa, S. S.
dc.contributor.author	Rebouças, G. O. G.
dc.contributor.author	Dantas, Ana L.
dc.date.accessioned	2020-04-08T22:12:07Z
dc.date.available	2020-04-08T22:12:07Z
dc.date.issued	2015-08-26
dc.description.resumo	We show that confinement in small volumes affects the interplay of exchange and dipolar interactions and the magnetic phases of hard and soft spherical core-shell nanoparticles. Large variations in the magnetization of thin shells may occur due to the core dipolar field gradient within the shell. The reversal field is tunable by the trends imposed by the dipolar and core-shell interface exchange energies. We show, for instance, that the reversal field of a CoFe2O4 (30 nm)@ MnFe 2O4 (6 nm) particle ranges from 15.5 kOe for antiferromagnetic coupling down to 2.5 kOe for ferromagnetic coupling.	pt_BR
dc.identifier.citation	MEDEIROS FILHO, F. C.; OLIVEIRA, L. L.; PEDROSA, S. S.; REBOUCAS, G. G. O.; DANTAS, Ana L.; CARRIÇO, Artur da Silva. Impact of core-shell dipolar interaction on magnetic phases of spherical core-shell nanoparticles. Physical Review. B, Condensed Matter and Materials Physics, v. 92, p. 0644221-0644227, 2015. ISSN 2469-9969 versão online. Disponível em: https://journals.aps.org/prb/abstract/10.1103/PhysRevB.92.064422. Acesso em: 08 abr. 2020.	pt_BR
dc.identifier.doi	https://doi.org/10.1103/PhysRevB.92.064422
dc.identifier.issn	2469-9950 (print), 2469-9969 (online)
dc.identifier.uri	https://repositorio.ufrn.br/jspui/handle/123456789/28776
dc.language	en	pt_BR
dc.publisher	American Physical Society	pt_BR
dc.subject	Core-shell	pt_BR
dc.subject	Magnetic phases	pt_BR
dc.subject	Nanoparticles	pt_BR
dc.title	Impact of core-shell dipolar interaction on magnetic phases of spherical core-shell nanoparticles	pt_BR
dc.type	article	pt_BR