Tailoring the structural and magnetic properties of Co-Zn nanosized ferrites for hyperthermia applications
A 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...
| Authors: | ; ; ; ; ; ; ; ; |
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| Format: | Article |
| Status: | Accepted version |
| Publication date: | 2018 |
| Country: | España |
| Institution: | Universidad Pública de Navarra |
| Repository: | Academica-e. Repositorio Institucional de la Universidad Pública de Navarra |
| OAI Identifier: | oai:academica-e.unavarra.es:2454/34213 |
| Online Access: | https://hdl.handle.net/2454/34213 |
| Access Level: | Open access |
| Keyword: | Magnetic nanoparticles Co-Zn ferrites Cation distribution Magnetic hyperhermia |
| _version_ | 1878734906677264384 |
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| author | Gómez Polo, Cristina |
| author2 | Recarte Callado, Vicente Cervera Gabalda, Laura María Beato López, Juan Jesús López García, Javier Rodríguez Velamazán, José Alberto Ugarte Martínez, María Dolores Mendonça, E. C. Duque, J. G. S. |
| author2_role | author author author author author author author author |
| author_browse | Beato López, Juan Jesús Cervera Gabalda, Laura María Duque, J. G. S. Gómez Polo, Cristina López García, Javier Mendonça, E. C. Recarte Callado, Vicente Rodríguez Velamazán, José Alberto Ugarte Martínez, María Dolores |
| author_facet | Gómez Polo, Cristina Recarte Callado, Vicente Cervera Gabalda, Laura María Beato López, Juan Jesús López García, Javier Rodríguez Velamazán, José Alberto Ugarte Martínez, María Dolores Mendonça, E. C. Duque, J. G. S. |
| author_role | author |
| collection | Academica-e. Repositorio Institucional de la Universidad Pública de Navarra |
| description | A 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. |
| eu_rights_str_mv | openAccess |
| format | article |
| id | ES_7233fc8001b2b5e9a35da038b9759f1d |
| institution | Universidad Pública de Navarra |
| instname_str | Universidad Pública de Navarra |
| network_acronym_str | ES |
| network_name_str | España |
| oai_identifier_str | oai:academica-e.unavarra.es:2454/34213 |
| publishDate | 2018 |
| publishDateSort | 2018 |
| publisher | Elsevier |
| publisherStr | Elsevier |
| reponame_str | Academica-e. Repositorio Institucional de la Universidad Pública de Navarra |
| spelling | Tailoring the structural and magnetic properties of Co-Zn nanosized ferrites for hyperthermia applications Gómez Polo, Cristina Recarte Callado, Vicente Cervera Gabalda, Laura María Beato López, Juan Jesús López García, Javier Rodríguez Velamazán, José Alberto Ugarte Martínez, María Dolores Mendonça, E. C. Duque, J. G. S. Magnetic nanoparticles Co-Zn ferrites Cation distribution Magnetic hyperhermia A 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. The 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). Elsevier https://hdl.handle.net/2454/34213 |
| spellingShingle | Tailoring the structural and magnetic properties of Co-Zn nanosized ferrites for hyperthermia applications Gómez Polo, Cristina Magnetic nanoparticles Co-Zn ferrites Cation distribution Magnetic hyperhermia |
| status_str | acceptedVersion |
| title | Tailoring the structural and magnetic properties of Co-Zn nanosized ferrites for hyperthermia applications |
| title_full | Tailoring the structural and magnetic properties of Co-Zn nanosized ferrites for hyperthermia applications |
| title_fullStr | Tailoring the structural and magnetic properties of Co-Zn nanosized ferrites for hyperthermia applications |
| title_full_unstemmed | Tailoring the structural and magnetic properties of Co-Zn nanosized ferrites for hyperthermia applications |
| title_short | Tailoring the structural and magnetic properties of Co-Zn nanosized ferrites for hyperthermia applications |
| title_sort | Tailoring the structural and magnetic properties of Co-Zn nanosized ferrites for hyperthermia applications |
| topic | Magnetic nanoparticles Co-Zn ferrites Cation distribution Magnetic hyperhermia |
| topic_facet | Magnetic nanoparticles Co-Zn ferrites Cation distribution Magnetic hyperhermia |
| url | https://hdl.handle.net/2454/34213 |