Burdinazko nanoimanak: konfigurazio magnetikoa eta biomedikuntza-aplikazioetarako potentziala

Abstract

Fe is an interesting material for magnetic-based biomedical applications due to its biocompatibility and high magnetization. This work investigates the spin structure of Fe nanodisks as a function of thickness and diameter. Nanodisks were fabricated with thicknesses ranging from 20 to 150 nm and diameters from 200 to 1000 nm. Magnetometry measurements allowed us to determine the geometrical conditions for the formation of a spin-vortex configuration. Furthermore, the magnetic response of Fe nanodisks in water solutions was analyzed under low-frequency magnetic fields. Finally, the effectiveness of these biomaterials has been proven in two-dimensional (2D) cultures of fibroblasts, as well as in substrates with magnetic islands.