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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Autores: 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
Tipo de documento: Artículo
Estado:Published version
Fecha de publicación:2001
País:España
Institución:Universidad de Barcelona
Repositorio:Dipòsit Digital de la UB
OAI Identifier:oai:diposit.ub.edu:2445/22098
Acceso en línea:https://hdl.handle.net/2445/22098
Nivel de acceso:Acceso abierto
Palabra clave:Nanopartícules
Propietats magnètiques
Ciència dels materials
Òxid de ferro
Química organometàl·lica
Magnetic properties
Materials science
Ferric oxide
Organometallic chemistry
Sumario: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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