Unconventional magnetic behavior of iron-oxide nanoparticles in polymeric matrices

We report the results of magnetization and 57Fe Mössbauer spectroscopy measurements performed in the temperature range 5-300 K on composites containing iron¿oxide nanoparticles encased in polystyrene type resins. After carrying out a suitable field treatment in order to decouple the particles from t...

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Authors: Testa, A. M.; Foglia, S.; Suber, L.; Fiorani, D.; Casas i Duocastella, Lluís; Roig i Serra, Anna; Molins i Grau, Elies; Greneche, J. M.; Tejada Palacios, Javier
Format: Article
Status:Published version
Publication date:2001
Country:España
Institution:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repository:Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:oai:recercat.cat:2445/22098
Online Access:https://hdl.handle.net/2445/22098
Access Level:Open access
Keyword:Nanopartícules
Propietats magnètiques
Ciència dels materials
Òxid de ferro
Química organometàl·lica
Magnetic properties
Materials science
Ferric oxide
Organometallic chemistry
Summary:We report the results of magnetization and 57Fe Mössbauer spectroscopy measurements performed in the temperature range 5-300 K on composites containing iron¿oxide nanoparticles encased in polystyrene type resins. After carrying out a suitable field treatment in order to decouple the particles from the matrix, a fraction of the particles freely rotate in response to an applied magnetic field

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