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dc.creatorDas, Rajaes_ES
dc.creatorAlonso Masa, Javieres_ES
dc.creatorKalappattil, Vijaysankares_ES
dc.creatorNemati, Zohrehes_ES
dc.creatorRodrigo, Iraties_ES
dc.creatorGarayo Urabayen, Enekoes_ES
dc.creatorGarcía, José Ángeles_ES
dc.creatorManh-Huong, Phanes_ES
dc.creatorSrikanth, Hariharanes_ES
dc.description.abstractMagnetic interactions can play an important role in the heating efficiency of magnetic nanoparticles. Although most of the time interparticle magnetic interactions are a dominant source, in specific cases such as multigranular nanostructures intraparticle interactions are also relevant and their effect is significant. In this work, we have prepared two different multigranular magnetic nanostructures of iron oxide, nanorings (NRs) and nanotubes (NTs), with a similar thickness but different lengths (55 nm for NRs and 470 nm for NTs). In this way, we find that the NTs present stronger intraparticle interactions than the NRs. Magnetometry and transverse susceptibility measurements show that the NTs possess a higher effective anisotropy and saturation magnetization. Despite this, the AC hysteresis loops obtained for the NRs (0-400 Oe, 300 kHz) are more squared, therefore giving rise to a higher heating efficiency (maximum specific absorption rate, SAR(max) = 110 W/g for the NRs and 80 W/g for the NTs at 400 Oe and 300 kHz). These results indicate that the weaker intraparticle interactions in the case of the NRs are in favor of magnetic hyperthermia in comparison with the NTs.en
dc.description.sponsorshipThis research was funded by the Vietnam National Foundation for Science and Technology Development (NAFOSTED), grant number 103.02-2019.314. The Spanish Government is acknowledged for the Nanotechnology in translational hyperthermia (HIPERNANO) research network (RED2018-102626-T) and for funding under the project number MAT2017-83631-C3. Research at USF was supported by US Department of Energy, Office of Basic Energy Sciences, Division of Materials Science and Engineering, Award No. DE-FG02-07ER46438. Basque Government is also acknowledged for funding under the project number IT-1005-16 and for the postdoctoral fellowship POS_2020_1_0028.en
dc.format.extent12 p.
dc.relation.ispartofNanomaterials, 11 (6), 2021
dc.rights© 2021 by the Authors. Creative Commons Attribution 4.0 Internationalen
dc.subjectMagnetic nanoparticlesen
dc.subjectBiomedical applicationsen
dc.subjectMagnetic interactionen
dc.subjectMagnetic hyperthermiaen
dc.titleIron oxide nanorings and nanotubes for magnetic hyperthermia: the problem of intraparticle interactionsen
dc.typeArtículo / Artikuluaes
dc.rights.accessRightsAcceso abierto / Sarbide irekiaes
dc.relation.projectIDinfo:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/MAT2017-83631-C3-1-R/ES/en
dc.type.versionVersión publicada / Argitaratu den bertsioaes

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© 2021 by the Authors. Creative Commons Attribution 4.0 International
Except where otherwise noted, this item's license is described as © 2021 by the Authors. Creative Commons Attribution 4.0 International

El Repositorio ha recibido la ayuda de la Fundación Española para la Ciencia y la Tecnología para la realización de actividades en el ámbito del fomento de la investigación científica de excelencia, en la Línea 2. Repositorios institucionales (convocatoria 2020-2021).
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