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Tailoring the structural and magnetic properties of Co-Zn nanosized ferrites for hyperthermia applications

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dc.contributor.authorGómez Polo, Cristina
dc.contributor.authorRecarte Callado, Vicente
dc.contributor.authorCervera Gabalda, Laura María
dc.contributor.authorBeato López, Juan Jesús
dc.contributor.authorLópez García, Javier
dc.contributor.authorRodríguez Velamazán, José Albertoes_ES
dc.contributor.authorUgarte Martínez, María Dolores
dc.contributor.authorMendonça, E. C.es_ES
dc.contributor.authorDuque, J. G. S.es_ES
dc.contributor.departmentZientziakeu
dc.contributor.departmentEstatistika, Informatika eta Matematikaeu
dc.contributor.departmentInstitute for Advanced Materials and Mathematics - INAMAT2en
dc.contributor.departmentCienciases_ES
dc.contributor.departmentEstadística, Informática y Matemáticases_ES
dc.contributor.funderGobierno de Navarra / Nafarroako Gobernuaes
dc.date.accessioned2019-08-09T07:27:38Z
dc.date.available2020-11-01T00:00:12Z
dc.date.issued2018
dc.description.abstractA comparative study of the magnetic properties (magnetic moment, magnetocrystalline anisotropy) and hyperthermia response in Co-Zn spinel nanoparticles is presented. The CoxZn1-xFe2O4 nanoparticles (x = 1, 0.5, 0.4, 0.3, 0.2 and 0.1) were synthesized by co-precipitated method and the morphology and mean crystallite size (around 10 nm) of the nanoparticles were analysed by TEM Microscopy. Regarding the magnetic characterization (SQUID magnetometry), Co-Zn nanoparticles display at room temperature anhysteretic magnetization curves, characteristic of the superparamagnetic behavior. A decrease in the blocking temperature, T-B, with Zn content is experimentally detected that can be ascribed to the reduction in the mean nanoparticle size as x decreases. Furthermore, the reduction in the magnetocrystalline anisotropy with Zn inclusion is confirmed through the analysis of TB versus the mean volume of the nanoparticles and the law of approach to saturation. Maximum magnetization is achieved for x = 0.5 as a result of the cation distribution between octahedral and tetrahedral spinel sites, analysed by neutron diffraction studies. The occurrence of a canted spin arrangement (Yafet-Kittel angle) is introduced to properly fit the magnetic spinel structures. Finally, the heating capacity of these spinel ferrites is analyzed under ac magnetic field (magnetic hyperthermia). Maximum SAR (Specific Absorption Rate) values are achieved for x = 0.5 that should be correlated to the maximum magnetic moment of this composition.en
dc.description.sponsorshipThe work has been performed within the framework of projects MAT2017-83631-C3-2-R (Spanish "Ministerio de Economía, Industria y Competitividad") and DRUG-MAG, Nueva generación de plataformas teragnósticas contra el cáncer asistidas por partículas superparamagnéticas (Gobierno de Navarra, Departamento de Desarrollo Económico). J. Lopez-Garcia acknowledges ILL for his Ph.D. contract. E. C. Mendonca, J. G. S. Duque thank to Brazilian agencies FAPITEC (PRONEX) and CNPq (455608/2014-8).en
dc.embargo.lift2020-11-01
dc.embargo.terms2020-11-01
dc.format.extent31 p.
dc.format.mimetypeapplication/pdfen
dc.identifier.doi10.1016/j.jmmm.2018.05.051
dc.identifier.issn1873-4766
dc.identifier.urihttps://academica-e.unavarra.es/handle/2454/34213
dc.language.isoengen
dc.publisherElsevieren
dc.relation.ispartofJournal of Magnetism and Magnetic Materials, 465 (2018) 211-219en
dc.relation.projectIDinfo:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/MAT2017-83631-C3-2-R/ES/en
dc.relation.publisherversionhttps://doi.org/10.1016/j.jmmm.2018.05.051
dc.rights© 2018 Elsevier B.V. This manuscript version is made available under the CC-BY-NC-ND 4.0.en
dc.rights.accessRightsinfo:eu-repo/semantics/openAccessen
dc.rights.accessRightsAcceso abierto / Sarbide irekiaes
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjectMagnetic nanoparticlesen
dc.subjectCo-Zn ferritesen
dc.subjectCation distributionen
dc.subjectMagnetic hyperhermiaen
dc.titleTailoring the structural and magnetic properties of Co-Zn nanosized ferrites for hyperthermia applicationsen
dc.typeinfo:eu-repo/semantics/articleen
dc.typeArtículo / Artikuluaes
dc.type.versioninfo:eu-repo/semantics/acceptedVersionen
dc.type.versionVersión aceptada / Onetsi den bertsioaes
dspace.entity.typePublication
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