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dc.contributor.author
Lavorato, Gabriel Carlos
dc.contributor.author
Das, Raja
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Xing, Yutao
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Robles, Joshua
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Litterst, F. Jochen
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Baggio Saitovitch, Elisa
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Phan, Manh Huong
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Srikanth, Hariharan
dc.date.available
2021-09-27T18:12:20Z
dc.date.issued
2020-01-29
dc.identifier.citation
Lavorato, Gabriel Carlos; Das, Raja; Xing, Yutao; Robles, Joshua; Litterst, F. Jochen; et al.; Origin and shell-driven optimization of the heating power in core/shell bimagnetic nanoparticles; American Chemical Society; ACS Applied Nano Materials; 3; 2; 29-1-2020; 1755-1765
dc.identifier.issn
2574-0970
dc.identifier.uri
http://hdl.handle.net/11336/141621
dc.description.abstract
The magnetic properties of core/shell nanoparticles can be finely tuned through the exchange coupling at the interface, enabling large heating powers under alternating magnetic fields. However, the origin of their heating efficiency is still unclear due to the complex interplay of different heating mechanisms. Here, we show that monodisperse Fe3O4/CoxZn1-xFe2O4 core/shell nanoparticles can be designed to provide large heating powers for different field amplitudes and dispersion media conditions by modulating their shell composition and thickness. The fine control of the nanoparticles' effective anisotropy provided by the interface coupling between core and shell leads to values up to ∼2400 W g-1 for water colloids and ∼1000 W g-1 for immobilized particles at 80 mT and 309 kHz. A reduction in the shell thickness or Co/Zn ratio results in a transition from a viscous heating regime to a region governed by a collective behavior, characterized by chainlike formation due to interparticle interactions. These results shed light on the origin of the large heating powers of core/shell ferrites and provide an empirical guide to design highly efficient magnetic nanoheaters.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
American Chemical Society
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
CORE/SHELL NANOPARTICLES
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INTERFACE EXCHANGE COUPLING
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INTERPARTICLE INTERACTIONS
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MAGNETIC ANISOTROPY
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MAGNETIC HYPERTHERMIA
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MAGNETIC NANOPARTICLES
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Físico-Química, Ciencia de los Polímeros, Electroquímica
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Ciencias Químicas
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CIENCIAS NATURALES Y EXACTAS
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Nano-materiales
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Nanotecnología
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INGENIERÍAS Y TECNOLOGÍAS
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Física de los Materiales Condensados
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Ciencias Físicas
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CIENCIAS NATURALES Y EXACTAS
dc.title
Origin and shell-driven optimization of the heating power in core/shell bimagnetic nanoparticles
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2021-09-06T17:27:22Z
dc.journal.volume
3
dc.journal.number
2
dc.journal.pagination
1755-1765
dc.journal.pais
Estados Unidos
dc.description.fil
Fil: Lavorato, Gabriel Carlos. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; Argentina
dc.description.fil
Fil: Das, Raja. University of South Florida; Estados Unidos
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Fil: Xing, Yutao. Universidade Federal Fluminense; Brasil
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Fil: Robles, Joshua. University of South Florida; Estados Unidos
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Fil: Litterst, F. Jochen. Centro Brasileiro de Pesquisas Físicas; Brasil. Technische Universitat Carolo Wilhelmina Zu Braunschweig.; Alemania
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Fil: Baggio Saitovitch, Elisa. Centro Brasileiro de Pesquisas Físicas; Brasil
dc.description.fil
Fil: Phan, Manh Huong. University of South Florida; Estados Unidos
dc.description.fil
Fil: Srikanth, Hariharan. University of South Florida; Estados Unidos
dc.journal.title
ACS Applied Nano Materials
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://pubs.acs.org/doi/abs/10.1021/acsanm.9b02449
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1021/acsanm.9b02449
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