Magnetic properties of polycrystalline cylindrical Fe65Pd35 nanowires

M. S. APREA; J. S. RIVA; P. G. BERCOFF; M. VÁZQUEZ

Conferencia; IEEE Around-the-Clock Around-the-Globe (AtC-AtG) Magnetics Conference 2022; 2022

Iron-palladium alloys are studied because oftheir interest in different areas, depending on their chemical and physicalproperties [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.References:[1]  K. Rozman, et al., “Austenite–martensite transformation inelectrodeposited Fe70Pd30 NWs: a step towards making bio-nano-actuators testedon in vivo systems”, Smart Mater. Struct.,vol. 27, no.035018, 2018, https://iopscience.iop.org/article/10.1088/1361-665X/aaacb0[2]   K. Pondman, et al., “Magnetic drug deliverywith FePd nanowires”, J. Magn. Magn. Mater., vol. 380, no.299-306, 2015,https://doi.org/10.1016/j.jmmm.2014.10.101[3]  E. Herrera, et al., “FePd nanowires modified with cyclodextrin.Characterization and catalytic properties evaluated by a model reductionreaction”, Appl. Surf. Sci.,vol. 529, no.147029, 2020,https://doi.org/10.1016/j.apsusc.2020.147029