Por favor, use este identificador para citar o enlazar a este item:
http://hdl.handle.net/10261/117834
COMPARTIR / EXPORTAR:
SHARE CORE BASE | |
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE | |
Título: | SiO2 coating effects in the magnetic anisotropy of Fe3-xO4 nanoparticles suitable for bio-applications |
Autor: | Figueroa, A. I. CSIC ORCID; Moya, C.; Bartolomé, Juan CSIC ORCID; Bartolomé, Fernando CSIC ORCID; García, L. M. CSIC; Pérez, Nicolás; Labarta, Amilcar; Batlle, Xavier | Fecha de publicación: | 2013 | Editor: | Institute of Physics Publishing | Citación: | Nanotechnology 24(15): 155705 (2013) | Resumen: | We present radio frequency transverse susceptibility (TS) measurements on oleic acid-coated and SiO2-coated Fe3−xO4 magnetite nanoparticles. The effects of the type of coating on the interparticle interactions and magnetic anisotropy are evaluated for two different particle sizes in powder samples. On the one hand, SiO2 coating reduces the interparticle interactions as compared to oleic acid coating, the reduction being more effective for 5 nm than for 14 nm diameter particles. On the other hand, the magnetic anisotropy field at low temperature is lower than 1 kOe in all cases and independent of the coating used. Our results are relevant concerning applications in biomedicine, since the SiO2 coating renders 5 and 14 nm hydrophilic particles with very limited agglomeration, low anisotropy, and superparamagnetic behavior at room temperature. The TS technique also allows us to discriminate the influence on the anisotropy field of interparticle interactions from that of the thermal fluctuations. | URI: | http://hdl.handle.net/10261/117834 | DOI: | 10.1088/0957-4484/24/15/155705 | Identificadores: | doi: 10.1088/0957-4484/24/15/155705 issn: 0957-4484 e-issn: 1361-6528 |
Aparece en las colecciones: | (ICMA) Artículos |
Ficheros en este ítem:
Fichero | Descripción | Tamaño | Formato | |
---|---|---|---|---|
accesoRestringido.pdf | 15,38 kB | Adobe PDF | Visualizar/Abrir |
CORE Recommender
SCOPUSTM
Citations
12
checked on 29-mar-2024
WEB OF SCIENCETM
Citations
12
checked on 22-feb-2024
Page view(s)
433
checked on 19-abr-2024
Download(s)
81
checked on 19-abr-2024
Google ScholarTM
Check
Altmetric
Altmetric
NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.