Actualidad

INAMAT2 organiza este seminario que se celebrará el día 29 de mayo a las 11:00h. en la sala Martín de Rada del edificio los Acebos, planta baja.

The Rare-Earth crisis in 2012 constitutes the kick-off to a renew interest on permanent magnets (PM), in particular, on rare-earth (RE) free or lean magnets. This interest is enhanced because different technologies that are pillars of the EU Green Deal, like motors for electrical mobility and wind generators, employ RE permanent magnets [2,3]. In my presentation, I will discuss this problem illustrating the different solutions that are being proposed in the framework of permanent magnets, but focusing in our studies on the improvement of the hard magnetic properties of ferrites at nanoscale. I will show our works concerning Strontium hexaferrites and Cobalt ferrites. On the first I will show a broad study on the correlations between morphology and magnetic properties on a series of M-type Sr ferrite particles which size varies from nanometers to microns. Also, the possibility of producing bulk magnets with nanomaterials will be presented. On the second case, the progressive magnetic hardness of Co- ferrite nanoparticles by changing different morphological features including phenomena as strain release or exchange bias will be shown and discussed. 

This work was developed in the framework of the BEETHOVEN project (https://projectbeethoven.eu/) that has received funding from the European Union’s Horizon Europe programme under grant agreement 101129912.  Also, this was supported by the PRIN-PNRR project HyperMag (prot. P2022RRRT4) and the National Sustainable Mobility Center CN00000023, Italian Ministry of University and Research Decree n. 1033 - 17/06/2022, Spoke 11 - Innovative Materials & Lightweighting). Both projects supported by European Union – NextGenerationEU.