Magnetic properties of polycrystalline cylindrical Fe65Pd35 nanowires

M. SOLEDAD APREA ; JULIETA S. RIVA; PAULA G. BERCOFF; MANUEL VÁZQUEZ

Conferencia; The IEEE Around-the-Clock Around-the-Globe Magnetics Conference 2022; 2022

Iron-palladiumalloys are studied because of their interest in different areas, depending on theirchemical and physical properties [1-3]. In this work, Fe65Pd35 nanowires(NWs) were synthesized in commercial alumina porous templates by potentiostaticelectrodeposition. The NWs morphology, composition, and crystalline structurewere analyzed by SEM, TEM, EDS and XRD. Fe65Pd35 NWs are10 μm long and 200 nm in diameter, with a polycrystalline microstructure (Fig.1a). Magnetic properties were investigated by measuring hysteresis loops atdifferent temperatures and ZFC-FC curves. The hysteresis loops were fittedusing the law of approach to saturation, obtaining the values of the anisotropyfield and the effective anisotropy constant at different temperatures (Fig. 1b).The blocking temperature dependence on the magnetic field was analysed using amodified random anisotropy model (Fig. 1c). The results indicate interactionsbetween particles inside the NWs up to nearest neighbours.