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AMPHIBIAN CSIC experimental data SrFe12O19 platelets SciRep2018. AMPHIBIAN CSIC simulated data SrFe12O19 platelets SciRep2018. [Dataset]

AutorDelgado Soria, Guiomar CSIC ORCID ; Jenuš, Petra; Marco, J.F. CSIC ORCID CVN ; Mandziak, Anna; Sánchez-Arenillas, M. CSIC ORCID; Moutinho, Fernando; Prieto, J. E. CSIC ORCID ; Prieto, P.; Cerdá, Jorge I. ; Tejera-Centeno, César ; Gallego, Silvia CSIC ORCID ; Foerster, M.; Aballe, Lucía; Valvidares, M.; Vasili, H.B.; Pereiro, E.; Quesada, Adrián CSIC ORCID ; de la Figuera, Juan CSIC ORCID CVN ; AMPHIBIAN Project ID:720853
Fecha de publicación2018
EditorDIGITAL.CSIC
Resumen[EN] Platelets of strontium hexaferrite (SrFeO, SFO), up to several micrometers in width, and tens of nanometers thick have been synthesized by a hydrothermal method. They have been studied by a combination of structural and magnetic techniques, with emphasis on Mössbauer spectroscopy and X-ray absorption based-measurements including spectroscopy and microscopy on the iron-L edges and the oxygen-K edge, allowing us to establish the differences and similarities between our synthesized nanostructures and commercial powders. The Mössbauer spectra reveal a greater contribution of iron tetrahedral sites in platelets in comparison to pure bulk material. For reference, high-resolution absorption and dichroic spectra have also been measured both from the platelets and from pure bulk material. The O-K edge has been reproduced by density functional theory calculations. Out-of-plane domains were observed with 180° domain walls less than 20 nm width, in good agreement with micromagnetic simulations.
URIhttp://hdl.handle.net/10261/202271
DOI10.20350/digitalCSIC/10852
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