000108503 001__ 108503
000108503 005__ 20230519145353.0
000108503 0247_ $$2doi$$a10.1088/1361-6528/abc386
000108503 0248_ $$2sideral$$a121604
000108503 037__ $$aART-2021-121604
000108503 041__ $$aeng
000108503 100__ $$aFabris, F.
000108503 245__ $$aAdjusting the Neel relaxation time of Fe3O4/ZnxCo1-xFe2O4 core/shell nanoparticles for optimal heat generation in magnetic hyperthermia
000108503 260__ $$c2021
000108503 5060_ $$aAccess copy available to the general public$$fUnrestricted
000108503 5203_ $$aIn this work it is shown a precise way to optimize the heat generation in high viscosity magnetic colloids, by adjusting the Neel relaxation time in core/shell bimagnetic nanoparticles, for magnetic fluid hyperthermia (MFH) applications. To pursue this goal, Fe3O4/ZnxCo1-xFe2O4 core/shell nanoparticles were synthesized with 8.5 nm mean core diameter, encapsulated in a shell of similar to 1.1 nm of thickness, where the Zn atomic ratio (Zn/(Zn + Co) at%) changes from 33 to 68 at%. The magnetic measurements are consistent with a rigid interface coupling between the core and shell phases, where the effective magnetic anisotropy systematically decreases when the Zn concentration increases, without a significant change of the saturation magnetization. Experiments of MFH of 0.1 wt% of these particles dispersed in water, in Dulbecco modified Eagles minimal essential medium, and a high viscosity butter oil, result in a large specific loss power (SLP), up to 150 W g(-1), when the experiments are performed at 571 kHz and 200 Oe. The SLP was optimized adjusting the shell composition, showing a maximum for intermediate Zn concentration. This study shows a way to maximize the heat generation in viscous media like cytosol, for those biomedical applications that require smaller particle sizes.
000108503 536__ $$9info:eu-repo/grantAgreement/EC/H2020/734187/EU/Spin conversion, logic storage in oxide-based electronics/SPICOLOST$$9This project has received funding from the European Union’s Horizon 2020 research and innovation program under grant agreement No H2020 734187-SPICOLOST
000108503 540__ $$9info:eu-repo/semantics/openAccess$$aby-nc-nd$$uhttp://creativecommons.org/licenses/by-nc-nd/3.0/es/
000108503 590__ $$a3.953$$b2021
000108503 592__ $$a0.757$$b2021
000108503 594__ $$a6.2$$b2021
000108503 591__ $$aMATERIALS SCIENCE, MULTIDISCIPLINARY$$b161 / 345 = 0.467$$c2021$$dQ2$$eT2
000108503 591__ $$aPHYSICS, APPLIED$$b51 / 161 = 0.317$$c2021$$dQ2$$eT1
000108503 591__ $$aNANOSCIENCE & NANOTECHNOLOGY$$b64 / 109 = 0.587$$c2021$$dQ3$$eT2
000108503 593__ $$aElectrical and Electronic Engineering$$c2021$$dQ1
000108503 593__ $$aChemistry (miscellaneous)$$c2021$$dQ1
000108503 593__ $$aMechanics of Materials$$c2021$$dQ1
000108503 593__ $$aMechanical Engineering$$c2021$$dQ1
000108503 593__ $$aMaterials Science (miscellaneous)$$c2021$$dQ1
000108503 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/acceptedVersion
000108503 700__ $$aLohr, J.
000108503 700__ $$aLima, E.
000108503 700__ $$ade Almeida, A.A.
000108503 700__ $$aTroiani, H.E.
000108503 700__ $$aRodriguez, L.M.
000108503 700__ $$aMansilla, M.V.
000108503 700__ $$0(orcid)0000-0002-1296-4793$$aAguirre, M.H.$$uUniversidad de Zaragoza
000108503 700__ $$0(orcid)0000-0003-1558-9279$$aGoya, G.F.$$uUniversidad de Zaragoza
000108503 700__ $$aRinaldi, D.
000108503 700__ $$aGhirri, A.
000108503 700__ $$aPeddis, D.
000108503 700__ $$aFiorani, D.
000108503 700__ $$aZysler, R.D.
000108503 700__ $$aDe Biasi, E.
000108503 700__ $$aWinkler, E.L.
000108503 7102_ $$12003$$2395$$aUniversidad de Zaragoza$$bDpto. Física Materia Condensa.$$cÁrea Física Materia Condensada
000108503 773__ $$g32, 6 (2021), 065703 [11 pp]$$pNanotechnology$$tNanotechnology$$x0957-4484
000108503 8564_ $$s3680012$$uhttps://zaguan.unizar.es/record/108503/files/texto_completo.pdf$$yPostprint
000108503 8564_ $$s2412818$$uhttps://zaguan.unizar.es/record/108503/files/texto_completo.jpg?subformat=icon$$xicon$$yPostprint
000108503 909CO $$ooai:zaguan.unizar.es:108503$$particulos$$pdriver
000108503 951__ $$a2023-05-18-13:28:39
000108503 980__ $$aARTICLE