Electronic Resource
Observation of magnetic vortex configuration in non-stoichiometric Fe3O4 nanospheres
| العنوان: | Observation of magnetic vortex configuration in non-stoichiometric Fe3O4 nanospheres |
|---|---|
| المؤلفون: | Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (Brasil), Conselho Nacional de Desenvolvimento Científico e Tecnológico (Brasil), Fundações de Amparo à Pesquisa (Brasil), Agencia Estatal de Investigación (España), Ministerio de Ciencia, Innovación y Universidades (España), Ministerio de Ciencia e Innovación (España), Fondo Nacional de Desarrollo Científico y Tecnológico (Chile), Fundação de Amparo à Pesquisa do Estado de São Paulo, Czech Science Foundation, Niraula, Gopal, Toneto, Denilson, Goya, Gerardo F., Zoppellaro, Giorgio, Coaquira, Jose A. H., Muraca, Diego, Denardin, Juliano C., Almeida, Trevor P., Knobel, Marcelo, Sharma, Surender K. |
| بيانات النشر: | Royal Society of Chemistry (UK) 2023 |
| نوع الوثيقة: | Electronic Resource |
| مستخلص: | Theoretical 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. |
| مصطلحات الفهرس: | artículo |
| URL: | Publisher's version The underlying dataset has been published as supplementary material of the article in the publisher platform at DOI 10.1039/D3NA00433C Sí info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2019-106947RB-C21/ES/NANOSISTEMAS LIPOSOMALES MAGNETICOS DE RESPUESTA COMBINADA A RADIOFRECUENCIA Y ULTRASONIDO PARA LIBERACION DE FARMACOS |
| الاتاحة: | Open access content. Open access content http://creativecommons.org/licenses/by-nc/3.0 openAccess |
| ملاحظة: | English |
| Other Numbers: | CTK oai:digital.csic.es:10261/344152 Nanoscale Advances 5: 5015-5028 (2023) 10.1039/D3NA00433C 2516-0230 1431959570 |
| المصدر المساهم: | CSIC From OAIster®, provided by the OCLC Cooperative. |
| رقم الانضمام: | edsoai.on1431959570 |
| قاعدة البيانات: | OAIster |
| الوصف غير متاح. |