MAGNUS · Strain-graded MAGnetoelectric composites based on NanoporoUS materials for information and biomedical technologies

Magnetoelectric (ME) composites have the potential to revolutionize current nanotechnologies due to their ability to simultaneously respond to external magnetic and electric stimuli. However, archetypical ME materials prepared on rigid supports show either small effects due to the clamping with the substrate (e.g., Si wafers) or require of extremely high voltages (in case ferroelectric –FE– substrates are employed). To overcome these drawbacks, MAGNUS proposes a comprehensive research program built on the disruptive idea of using strain-gradient (i.e., flexoelectricity), instead of homogeneous strain, to boost the properties of ME composites deposited onto rigid substrates. The project encompasses new strategies to grow ‘mechanically flexible’ nanoporous magnetostrictive materials (FeGa, FeCo, Co ferrite) and fill them with FE polymers (P(VDF-TrFE)), rendering new functionally graded composites, operated with magnetic/electric fields, that will surpass classical compositionally-graded materials. The project aims at using these composites for (i) ME (wireless) bone tissue engineering and (ii) functionally-graded magnetic recording media. MAGNUS will take advantage of (i) my previous experience on electrodeposited Fe-based alloys and spin-coated FE polymers, (ii) the strong background of the main Host Institution (UAB) on magnetism and (iii) the expertise of the Partner Organizations on ME materials for biomedicine (ETH Zürich) and the growth of porous oxides (Univ. Cambridge). MAGNUS will bring interesting cross-cutting outcomes in the field of magnetoelectricity, exploiting strain-gradient mediated ME effects to an unprecedented extent and settling the grounds to consolidate the use of these frontier materials in the newly launched “Horizon Europe” Framework Programme (2021-2027). Besides the fascinating science to be unveiled in MAGNUS, the project will offer me the possibility to create a prestigious network which will reinforce my professional status in science.