Exchange-spring behavior in nanopowders of CoFe2O4–CoFe2

Araújo, José Humberto de; Cabral, F. A. O.; Soares, João Medeiros; Machado, F. L. A.

Exchange-spring behavior in nanopowders of CoFe2O4–CoFe2

Página do item simplificado Estatísticas

dc.contributor.author	Araújo, José Humberto de
dc.contributor.author	Cabral, F. A. O.
dc.contributor.author	Soares, João Medeiros
dc.contributor.author	Machado, F. L. A.
dc.date.accessioned	2020-06-22T14:18:01Z
dc.date.available	2020-06-22T14:18:01Z
dc.date.issued	2011-02-15
dc.description.resumo	The nature of the magnetic interactions among core-shell nanoparticles of CoFe2O4–CoFe2 having an average particle size of 32 nm were investigated by δm plots. It was found that the interactions are mainly demagnetizing in nature for nanoparticles with core diameters larger than 26 nm. For smaller values of core diameters, the exchange-spring phenomenon takes place due to the exchange-coupling at the core-shell interface. The critical thickness of the shell was estimated to be 7.8 nm. The overall results are in excellent agreement with current theoretical models	pt_BR
dc.identifier.citation	SOARES, J.M.; CABRAL, F.A.O.; ARAÚJO, J. H.; MACHADO, F.L A.. Exchange-spring behavior in nanopowders of CoFe2O4?CoFe2. Applied Physics Letters, v. 98, p. 072502-1, 2011. Disponível em: https://aip.scitation.org/doi/10.1063/1.3552677 Acesso em: 18 jun 2020. https://doi.org/10.1063/1.3552677.	pt_BR
dc.identifier.doi	10.1063/1.3552677
dc.identifier.issn	1077-3118
dc.identifier.uri	https://repositorio.ufrn.br/jspui/handle/123456789/29313
dc.language	en	pt_BR
dc.publisher	AIP Publishing	pt_BR
dc.subject	Exchange-spring	pt_BR
dc.subject	Nanopowders	pt_BR
dc.title	Exchange-spring behavior in nanopowders of CoFe2O4–CoFe2	pt_BR
dc.type	article	pt_BR