132143 20240301161206.0 doi 10.1016/j.jmmm.2006.09.011 sideral 65622 ART-2007-65622 eng Millan, A. (orcid)0000-0003-0828-3212 Surface Effects in Maghemite Nanoparticles 2007 A consistent model is presented for the variation of saturation magnetization with particle size in maghemite nanoparticles, based on the existence of a magnetically disordered layer with a constant thickness of 1 nm. For particles smaller than 3 nm, layer thickness increases rapidly, and MS is already zero for 2.5 nm particle size. Magnetization measurements have been performed on maghemite–polymer nanocomposites with low size dispersion and a regular distribution of particles in the matrix. A representative number of samples have been studied with a diameter size in the range from 1.5 to 15 nm and ±10% of size dispersion. Access copy available to the general public Unrestricted info:eu-repo/grantAgreement/ES/CICYT/MAT2004-03395-C02-01 info:eu-repo/semantics/openAccess by-nc-nd http://creativecommons.org/licenses/by-nc-nd/3.0/es/ 1.704 2007 MATERIALS SCIENCE, MULTIDISCIPLINARY 47 / 184 = 0.255 2007 Q2 T1 PHYSICS, CONDENSED MATTER 20 / 59 = 0.339 2007 Q2 T2 info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion Urtizberea, A. (orcid)0000-0002-8424-9780 Silva, N. J. O. Palacio, F. (orcid)0000-0002-6403-7270 Amaral, V. S. Snoeck, E. Serin, V. 312, 1 (2007), L5-L9 J. magn. magn. mater. Journal of Magnetism and Magnetic Materials 0304-8853 811538 http://zaguan.unizar.es/record/132143/files/texto_completo.pdf Postprint 2231783 http://zaguan.unizar.es/record/132143/files/texto_completo.jpg?subformat=icon icon Postprint oai:zaguan.unizar.es:132143 articulos driver 2024-03-01-14:50:37 ARTICLE