首页|A combined micro-Raman, X-ray absorption and magnetic study to follow the glycerol-assisted growth of epsilon-iron oxide sol-gel coatings
A combined micro-Raman, X-ray absorption and magnetic study to follow the glycerol-assisted growth of epsilon-iron oxide sol-gel coatings
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NSTL
Elsevier
Epsilon iron oxide (ε-Fe2O3) coatings on Si(100) substrates are obtained by an easy one-pot sol-gel recipe assisted by glycerol in an acid medium. Glycerol, given its small dimensions, enables the formation of ε-Fe2O3 nanoparticles with a size of a few nanometers and the highest purity is reached in coatings after a densification treatment at 960 °C. The structural and compositional evolution up to 1200 °C is studied by confocal Raman microscopy and X-ray absorption spectroscopy techniques, correlating the existing magnetic properties. We report a novel characterization method, which allows monitoring the evolution of the precursor micelles as well as the intermediate and final phases formed. Furthermore, the inherent industrial technology transfer of the sol-gel process is also demonstrated with the ε-Fe2O3 polymorph, impelling its application in the coatings form.
Confocal Raman microscopyEpsilon iron oxideGlycerol as a steric agentMagnetismSol-gel MethodX-ray absorption spectroscopy
Lopez-Sanchez J.、Munoz-Noval A.、Rodriguez de la Fuente O.、Carmona N.、Salas-Colera E.、Castro G.R.、Rubio-Zuazo J.、Serrano A.、del Campo A.、Cabero M.、Varela M.、Abuin M.
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Departamento de Física de Materiales Universidad Complutense de Madrid (UCM)
SpLine Spanish CRG BM25 Beamline ESRF-The European Synchrotron
Instituto de Cerámica y Vidrio (ICV-CSIC)
Instituto Pluridisciplinar & Departamento de Física de Materiales Universidad Complutense de Madrid (UCM)
Instituto de Sistemas Optoelectrónicos y Microtecnología (ISOM-UPM)
NSTL
Elsevier
