In this work we describe the method for the electrodeposition of Fe-Pd alloy in form of nanowires and the dependence of the chemical composition and/or homogeneity of obtained nanowires on various electrical potential/voltage which were applied for electrodeposition. Using a high-resolution FEGSEM images and BSE compositional contrast mode we have analyzed the morphology of the nanowires, which had a diameter of 0.2 micrometer and a length of 3 to 8 micrometers. The chemical composition of the nanowires was determined using FEGSEM with primary electron-beam energy of 6.5 keV and EDS-SDD elemental analysis of Fe-L and Pd-L spectral lines. Using the Monte Carlo simulations we have found that the spatial EDS analytical resolution at applied experimental conditions is equivalent to the hemisphere with diameter of about 150 nm. Such nanometer/submicrometer scale analytical resolution allowed us to analyze the compositional homogeneity of the nanowires along their length. EDS quantitative results showed that the nanowires produced at potentials of -1.6 and -1.5 V have so-called gradient composition with considerable variations of Fe and Pd concentrations whereas the composition of the nanowires obtained at -1.4 V was more consistent and close to the expected Fe/Pd=70/30 atomic ratio. This is due to the diffusion controlled deposition of Pd and because the deposition rate of Fe is not that high. With these electrodeposition conditions gradient composition along nanowires was successfully avoided.
B.03 Paper at an international scientific conference
COBISS.SI-ID: 25068583Co-Pt and Fe-Pt nanotubes were produced via direct electroplating. After synthesis the nanotubes with 200 nm diameter and up to 2 micrometers long were obtained. After thermal annealing a detailed characterization of the microstructure, phase composition and magnetic properties of the nanotubes was performed. For microscopic investigations we applied optimized FEGSEM setup and EDS-SDD analyses with submicrometer analytical resolution for the determination of chemical composition of these nanostructured objects. We confirmed that final composition of the nanotubes is close to atomic ratios Co/Pt=1/1 and Fe/Pd=1/1, which is very appropriate for ensuring good magnetic properties of these materials.
B.06 Other
COBISS.SI-ID: 25217319The ZnO films that were grown on glass substrate under low temperature hydrothermal conditions. Films were investigated using a combination of a scanning electron microscopy (FEGSEM) and a transmission electron microscopy (TEM). The phases and the preferred growth direction were identified using x-ray diffraction (XRD), electron backscatter diffraction (EBSD) in the FEGSEM and electron diffraction in the TEM.
B.06 Other
COBISS.SI-ID: 25261607