X-ray magnetic circular dichroism study of iron/iron oxide granular nanostructures
| Autor: | Ennio Bonetti, Philippe Sainctavit, Federico Boscherini, Isabelle Letard, Luca Pasquini, Sandrine Brice-Profeta, Luca Signorini |
|---|---|
| Přispěvatelé: | Department of Physics and CNR-INFM, Alma Mater Studiorum Università di Bologna [Bologna] (UNIBO), European Synchrotron Radiation Facility (ESRF), ENSEEG/LTPCM Domaine Universitaire, ENSEEG/LTPCM, Institut de minéralogie et de physique des milieux condensés (IMPMC), Université Pierre et Marie Curie - Paris 6 (UPMC)-IPG PARIS-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Université Pierre et Marie Curie - Paris 6 (UPMC)-Université Paris Diderot - Paris 7 (UPD7)-Institut de Physique du Globe de Paris (IPG Paris)-Centre National de la Recherche Scientifique (CNRS), L. Signorini, L. Pasquini, F. Boscherini, E. Bonetti, I. Letard, S. Brice-Profeta, Ph. Sainctavit |
| Rok vydání: | 2006 |
| Předmět: |
ULTRAFINE IRON PARTICLES
Nuclear and High Energy Physics Materials science Magnetism NANOSTRUTTURE Oxide Iron oxide Analytical chemistry Maghemite 02 engineering and technology engineering.material Iron oxides 01 natural sciences chemistry.chemical_compound Magnetization 0103 physical sciences 010306 general physics Instrumentation Magnetite RADIAZIONE DI SINCROTRONE XMCD Magnetic circular dichroism Metallurgy 021001 nanoscience & nanotechnology MAGNETISMO chemistry X-ray magnetic circular dichroism PACS : 61.10.Ht 61.46.+w 75.75.+a 81.07.Bc engineering Nanoparticles [PHYS.COND.CM-SCE]Physics [physics]/Condensed Matter [cond-mat]/Strongly Correlated Electrons [cond-mat.str-el] 0210 nano-technology |
| Zdroj: | Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, Elsevier, 2006, 246, pp.20-24. ⟨10.1016/j.nimb.2005.12.012⟩ Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 2006, 246, pp.20-24. ⟨10.1016/j.nimb.2005.12.012⟩ 246 (2006): 20–24. info:cnr-pdr/source/autori:Signorini, L; Pasquini, L; Boscherini, F; Bonetti, E; Letard, I; Brice-Profeta, S; Sainctavit, P/titolo:X-ray magnetic circular dichroism study of iron%2Firon oxide granular nanostructures/doi:/rivista:/anno:2006/pagina_da:20/pagina_a:24/intervallo_pagine:20–24/volume:246 |
| ISSN: | 0168-583X |
| DOI: | 10.1016/j.nimb.2005.12.012 |
| Popis: | We present a study of the local magnetic properties of an iron/iron oxide nanostructured granular system by X-ray magnetic circular dichroism. The samples investigated consist of metallic iron (alpha-Fe) nanoparticles embedded in a nanocrystalline oxide matrix composed by both magnetite (Fe3O4) and maghemite (gamma-Fe2O3). Samples were obtained by the inert gas condensation technique. Thanks to the chemical and site selectivity of XMCD, we were able to distinguish the magnetic contributions of the metallic core and of the two oxide phases present. in the matrix and independently study their behaviour as a function of iron particle size, applied magnetic field, sample temperature and magnetization history. (c) 2006 Elsevier B.V. All rights reserved. |
| Databáze: | OpenAIRE |
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