000131876 001__ 131876
000131876 005__ 20241125101141.0
000131876 0247_ $$2doi$$a10.1039/d3na00433c
000131876 0248_ $$2sideral$$a137184
000131876 037__ $$aART-2023-137184
000131876 041__ $$aeng
000131876 100__ $$aNiraula, Gopal
000131876 245__ $$aObservation of magnetic vortex configuration in non-stoichiometric Fe3O4 nanospheres
000131876 260__ $$c2023
000131876 5060_ $$aAccess copy available to the general public$$fUnrestricted
000131876 5203_ $$aTheoretical and micromagnetic simulation studies of magnetic nanospheres with vortex configurations suggest that such nanostructured materials have technological advantages over conventional nanosystems for applications based on high-power-rate absorption and subsequent emission. However, full experimental evidence of magnetic vortex configurations in spheres of submicrometer size is still lacking. Here, we report the microwave irradiation fabrication of Fe3O4 nanospheres and establish their magnetic vortex configuration based on experimental results, theoretical analysis, and micromagnetic simulations. Detailed magnetic and electrical measurements, together with Mössbauer spectroscopy data, provide evidence of a loss of stoichiometry in vortex nanospheres owing to the presence of a surface oxide layer, defects, and a higher concentration of cation vacancies. The results indicate that the magnetic vortex spin configuration can be established in bulk spherical magnetite materials. This study provides crucial information that can aid the synthesis of magnetic nanospheres with magnetically tailored properties; consequently, they may be promising candidates for future technological applications based on three-dimensional magnetic vortex structures.
000131876 536__ $$9info:eu-repo/grantAgreement/ES/MICINN/PID2019-106947RB-C21
000131876 540__ $$9info:eu-repo/semantics/openAccess$$aby-nc$$uhttp://creativecommons.org/licenses/by-nc/3.0/es/
000131876 590__ $$a4.6$$b2023
000131876 592__ $$a0.953$$b2023
000131876 591__ $$aMATERIALS SCIENCE, MULTIDISCIPLINARY$$b141 / 439 = 0.321$$c2023$$dQ2$$eT1
000131876 591__ $$aNANOSCIENCE & NANOTECHNOLOGY$$b60 / 141 = 0.426$$c2023$$dQ2$$eT2
000131876 591__ $$aCHEMISTRY, MULTIDISCIPLINARY$$b69 / 231 = 0.299$$c2023$$dQ2$$eT1
000131876 593__ $$aAtomic and Molecular Physics, and Optics$$c2023$$dQ1
000131876 593__ $$aEngineering (miscellaneous)$$c2023$$dQ1
000131876 593__ $$aMaterials Science (miscellaneous)$$c2023$$dQ1
000131876 593__ $$aChemistry (miscellaneous)$$c2023$$dQ1
000131876 593__ $$aBioengineering$$c2023$$dQ2
000131876 594__ $$a8.0$$b2023
000131876 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000131876 700__ $$aToneto, Denilson
000131876 700__ $$0(orcid)0000-0003-1558-9279$$aGoya, Gerardo F.$$uUniversidad de Zaragoza
000131876 700__ $$aZoppellaro, Giorgio
000131876 700__ $$aCoaquira, Jose A. H.
000131876 700__ $$aMuraca, Diego
000131876 700__ $$aDenardin, Juliano C.
000131876 700__ $$aAlmeida, Trevor P.
000131876 700__ $$aKnobel, Marcelo
000131876 700__ $$aAyesh, Ahmad I.
000131876 700__ $$aSharma, Surender K.
000131876 7102_ $$12003$$2395$$aUniversidad de Zaragoza$$bDpto. Física Materia Condensa.$$cÁrea Física Materia Condensada
000131876 773__ $$g5, 18 (2023), 5015-5028$$tNanoscale Advances$$x2516-0230
000131876 8564_ $$s1408250$$uhttps://zaguan.unizar.es/record/131876/files/texto_completo.pdf$$yVersión publicada
000131876 8564_ $$s2795904$$uhttps://zaguan.unizar.es/record/131876/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000131876 909CO $$ooai:zaguan.unizar.es:131876$$particulos$$pdriver
000131876 951__ $$a2024-11-22-12:02:34
000131876 980__ $$aARTICLE