BUSCADOR RECOLECTA

Los datos se componen de grupos de 3 imágenes de microscopía XPEEM correspondientes a 5 islas nanométricas de magnetita. Cada isla está identificada en el nombre de los datos como i1, i2….i5, y las tres imágenes de cada isla con el identificador R0, R60 y R120., We have grown high quality magnetite microcrystals free from antiphase boundaries on Ru(0001) by reactive molecular beam epitaxy, conserving bulk magnetic properties below 20 nm thickness. Magnetization vector maps are obtained by X-ray spectromicroscopy and compared with micromagnetic simulations. The observed domain configurations are dictated purely by shape anisotropy, overcoming the possible influences of (magneto)crystalline anisotropy and defects, thus demonstrating the possibility of designing spin structures in ultrathin, magnetically soft magnetite at will., UE, programa H2020, Proyecto AMPHIBIAN n º 720853., Peer reviewed

[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., UE, programa H2020, Proyecto AMPHIBIAN n º 720853, Peer reviewed

UE, programa H2020, Proyecto AMPHIBIAN n º 720853., Peer reviewed

Peer reviewed

Peer reviewed

Peer reviewed