Artículo
Structure of Zn x Fe3− x O4 nanoparticles studied by neutron diffraction and its relation with their response in magnetic hyperthermia experiments
Lohr, Javier Hernán
; Tobia, Dina
; Torres, T. E.; Rodríguez, L.; Puente Orench, I.; Cuello, G. J.; Aguirre, M. H.; Campo, J.; Aurelio, Gabriela
; Lima, Enio Junior
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Fecha de publicación:
07/2024
Editorial:
American Institute of Physics
Revista:
Journal of Applied Physics
ISSN:
0021-8979
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
The mixed zinc-ferrite spinel magnetic nanoparticles (MNPs) with the general formula ZnxFe3−xO4 are among the most extensively studied families of Fe oxides due to their interesting and diverse chemical, electronic, and magnetic properties. These systems offer the possibility of surface functionalization and possess high biocompatibility, making them highly attractive for applications in biomedicine, such as magnetic fluid hyperthermia (MFH). The efficiency of the MFH process relies on the magnetic, structural and morphological properties of the MNPs. The substitution with the Zn ion and the cationic distribution, as well as the synthesis process employed, have a direct impact on the final properties of these oxides. Therefore, it is essential to have tools that enable a comprehensive characterization of the system to assess its performance in MFH. In this study, we have synthesized four ZnxFe3−xO4 MNP systems using three different methods: two by thermal decomposition at high temperatures, one by co-precipitation, and another by co-precipitation followed by ball milling. We analyze the effect of these various synthesis processes on the magnetic and crystallographic properties, aiming to correlate them with the response of each system in MFH. Neutron diffraction data are employed to determine the cation site occupation and to investigate the correlation with the synthesis method. MFH measurements were conducted in media of diverse viscosities, revealing different values of specific loss power, thus demonstrating a clear dependence on the synthesis process and Zn content.
Palabras clave:
Zn ferrita
,
Hyperthermia
,
Magnetism
,
Neutron diffraction
Archivos asociados
Licencia
Identificadores
Colecciones
Articulos (UE-INN - NODO BARILOCHE)
Articulos de UNIDAD EJECUTORA INSTITUTO DE NANOCIENCIA Y NANOTECNOLOGIA - NODO BARILOCHE
Articulos de UNIDAD EJECUTORA INSTITUTO DE NANOCIENCIA Y NANOTECNOLOGIA - NODO BARILOCHE
Articulos(CCT - PATAGONIA NORTE)
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - PATAGONIA NORTE
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - PATAGONIA NORTE
Citación
Lohr, Javier Hernán; Tobia, Dina; Torres, T. E.; Rodríguez, L.; Puente Orench, I.; et al.; Structure of Zn x Fe3− x O4 nanoparticles studied by neutron diffraction and its relation with their response in magnetic hyperthermia experiments; American Institute of Physics; Journal of Applied Physics; 136; 4; 7-2024; 1-12
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