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Pàgina inicial > Articles > Articles publicats > Strontium hexaferrite platelets : |
Data: | 2019 |
Resum: | 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. |
Ajuts: | Ministerio de Economía y Competitividad MAT2015-64110-C2-1-P Ministerio de Economía y Competitividad MAT2015-64110-C2-2-P Ministerio de Economía y Competitividad MAT2015-66888-C3-1-R European Commission 720853 |
Drets: | Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original. |
Llengua: | Anglès |
Document: | Article ; recerca ; Versió publicada |
Matèria: | Magnetic properties and materials ; Surfaces, interfaces and thin films |
Publicat a: | Scientific reports, Vol. 9 (August 2019) , art. 11777, ISSN 2045-2322 |
13 p, 3.0 MB |