title: X-ray absorption and Mössbauer spectroscopies characterization of iron nanoclusters prepared by the gas aggregation technique.
abstract: Partially oxidized iron nanoclusters have been prepared by the gas-phase aggregation technique with typical sizes of 2-3 nm. This preparation technique has been reported to obtain clusters with interesting magnetic properties such as very large exchange bias. In this paper, a sample composition study carried out by Mössbauer and X-ray absorption spectroscopies is reported. The information reached by these techniques, which is based on the iron short range order, results to be an ideal way to have a characterization of the whole sample since the obtained data are an average over a very large amount of the clusters. In addition, our results indicate the presence of ferrihydrite, which is a compound typically ignored when studying this type of systems.
authors: Instituto de Ciencia de Materiales de Madrid, Consejo Superior de Investigaciones Científicas, Cantoblanco, 28049 Madrid, Spain.
authors: J
authors: J
authors: Sánchez-Marcos
authors: M A
authors: MA
authors: Laguna-Marco
authors: R
authors: R
authors: Martínez-Morillas
authors: E
authors: E
authors: Céspedes
authors: N
authors: N
authors: Menéndez
authors: F
authors: F
authors: Jiménez-Villacorta
authors: C
authors: C
authors: Prieto
mesh_terms: D003460:Crystallization / Q000379:methods*; D005740:Gases / Q000737:chemistry*; D007501:Iron / Q000737:chemistry*; D046911:Macromolecular Substances / Q000737:chemistry; D008422:Materials Testing; D053768:Metal Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure*; D008968:Molecular Conformation; D056951:Photoelectron Spectroscopy / Q000379:methods*; D013057:Spectrum Analysis / Q000379:methods*; D013499:Surface Properties
chemical_list: D005740:Gases; D046911:Macromolecular Substances; D007501:Iron