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Título:
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Magnetic Nanoparticles for Power Absorption: optimizing size, shape and magnetic properties.
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Autores:
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Gonzalez Fernandez, M. A. ;
Torres, T. ;
Andrés Vergés, M. ;
Costo, R. ;
Presa Muñoz del Toro, Patricia de la ;
Serna, C. J. ;
Morales, M. P. ;
Marquina, C. ;
Ibarra, M. R. ;
Goya, G. F.
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Tipo de documento:
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texto impreso
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Editorial:
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Elsevier, 2009-10
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Dimensiones:
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application/pdf
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Nota general:
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cc_by_nc_nd
info:eu-repo/semantics/openAccess
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Idiomas:
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Palabras clave:
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Estado = Publicado
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Materia = Ciencias: Física: Física de materiales
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Materia = Ciencias: Física: Física del estado sólido
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Tipo = Artículo
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Resumen:
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We present a Study on the magnetic properties of naked and silica-coated Fe?O?nanoparticles with sizes between 5 and 110 nm. Their efficiency as heating agents was assessed through specific power absorption (SPA) measurements as a function of particle size and shape. The results show a strong dependence of the SPA with the particle size, with a maximum around 30 nm, as expected for a Neel relaxation mechanism in single-domain particles. The SiO?shell thickness was found to play an important role in the SPA mechanism by hindering the heat Outflow, thus decreasing the heating efficiency. It is concluded that a compromise between good heating efficiency and surface functionality for biomedical purposes can be attained by making the SiO?functional coating as thin as possible.
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En línea:
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https://eprints.ucm.es/45511/1/DeLaPresaP%2005%20preprint.pdf
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