Fe-Pd thin films with various compositions and thicknesses were produced by electrodeposition using constant potentials from -1.0 to -1.3 V. FEGSEM and AFM analyses revealed a smooth, nanostructured surface morphology of the films, with more granular features appearing at more negative potentials. High-resolution FEGSEM images of the films’ cross-sections and complementary calculations using data from the EDS thin-film analyses were used to determine the film thicknesses, showing that 50-nm to 120-nm ultrathin films were obtained. The chemical compositions of the films were measured by quantitative EDS electron-probe microanalysis using two independent approaches: (i) low-voltage analysis (LVEDS) and (ii) variable-voltage analysis with a dedicated thin-film analysis (TFA) method. Both approaches were properly modified and optimized on the basis of Monte Carlo simulation data. The results showed that the composition of the Fe-Pd films was close to the preferred equiatomic Fe50Pd50 stoichiometry (which is important for achieving good magnetic properties) and was obtained at -1.3 V and -1.2 V. At more positive potentials the Fe-Pd films became Pd-rich. The best agreement between the LVEDS and TFA quantitative results was achieved for Fe-Pd films that were thicker than 80 nm, and a slight discrepancy within the ± 10 % relative between the LVEDS and TFA values was observed for films thinner than 70 nm. The faster LVEDS approach is suitable for the routine analyses of numerous Fe-Pd samples, i.e., to obtain information about the film’s composition in a short time. The more demanding TFA approach was found to be very appropriate for accurate compositional analyses of Fe-Pd ultrathin films and for determining the film thickness.
COBISS.SI-ID: 27199783
This paper presents a mineralogical analysis of various chondrule types and chemical analysis of olivine in different parts of meteorite Jesenice. Quantitative energy-dispersive X-ray spectroscopy with a scanning electron microscope was used for the analyses. The results showed that the chemical composition of the olivine was homogeneous throughout the meteorite with an average olivine composition of Fa 26.4 ± 0.6. The results of this study were in agreement with previous study of the meteorite, which showed that the meteorite Jesenice was an equilibrated L chondrite.
COBISS.SI-ID: 2184277
In this paper the oriented ZnO films grown on homogeneous ZnO seed-layer on glass substrates were investigated. In regard to the J2-4237 project the contribution to this investigation was related to the performance of precise study of film’s micro- and/or nano-structures of both the top and cross-sectional ZnO film surfaces. This was accomplished by using very high-magnification observations (≥ 100.000 x) following by corresponding micrographs recording, preferentially exploiting the in-lens secondary electron detection in a high-resolution field-emission scanning electron microscope.
COBISS.SI-ID: 26554407