Testa, A. M.Foglia, S.Suber, L.Fiorani, D.Casas i Duocastella, LluísRoig i Serra, AnnaMolins i Grau, EliesGreneche, J. M.Tejada Palacios, Javier2012-02-162012-02-1620010021-8979https://hdl.handle.net/2445/22098We 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 field6 p.application/pdfengNanoparticles(c) American Institute of Physics, 2001NanopartículesPropietats magnètiquesCiència dels materialsÒxid de ferroQuímica organometàl·licaMagnetic propertiesMaterials scienceFerric oxideOrganometallic chemistryinfo:eu-repo/semantics/article515727info:eu-repo/semantics/openAccess