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dc.creatorGómez Polo, Cristinaes_ES
dc.creatorRecarte Callado, Vicentees_ES
dc.creatorCervera Gabalda, Laura Maríaes_ES
dc.creatorBeato López, Juan Jesúses_ES
dc.creatorLópez García, Javieres_ES
dc.creatorRodríguez Velamazán, José Albertoes_ES
dc.creatorUgarte Martínez, María Doloreses_ES
dc.creatorMendonça, E. C.es_ES
dc.creatorDuque, J. G. S.es_ES
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.format.extent31 p.
dc.relation.ispartofJournal of Magnetism and Magnetic Materials, 465 (2018) 211-219en
dc.rights© 2018 Elsevier B.V. This manuscript version is made available under the CC-BY-NC-ND 4.0.en
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.typeArtículo / Artikuluaes
dc.contributor.departmentUniversidad Pública de Navarra. Departamento de Cienciases_ES
dc.contributor.departmentNafarroako Unibertsitate Publikoa. Zientziak Sailaeu
dc.contributor.departmentUniversidad Pública de Navarra. Departamento de Estadística, Informática y Matemáticases_ES
dc.contributor.departmentNafarroako Unibertsitate Publikoa. Estatistika, Informatika eta Matematika Sailaeu
dc.contributor.departmentUniversidad Pública de Navarra / Nafarroako Unibertsitate Publikoa. InaMat - Institute for Advanced Materialses_ES
dc.rights.accessRightsAcceso abierto / Sarbide irekiaes
dc.type.versionVersión aceptada / Onetsi den bertsioaes
dc.contributor.funderGobierno de Navarra / Nafarroako Gobernuaes

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© 2018 Elsevier B.V. This manuscript version is made available under the CC-BY-NC-ND 4.0.
Except where otherwise noted, this item's license is described as © 2018 Elsevier B.V. This manuscript version is made available under the CC-BY-NC-ND 4.0.