Rhombohedral Boron Nitride (r-BN) layers were grown on sapphire substrate in a hot-wall chemical vapor deposition reactor. Characterization of these layers is reported in details. Xray diffraction (XRD) is used as a routine characterization tool to investigate the crystalline quality of the films and the identification of the phases is revealed using detailed pole figure measurements. Transmiss...

The results of EXAFS measurements at 300 K for the superconducting compounds Tl0.75Cu0.25Ba2Ca3Cu4Oy [Tl-1234], TlBa2Ca3Cu4Oy [Tl-1212], and CuBa2Ca3Cu4Oy [Cu-1234]. are reported. We have measured the EXAFS spectrum for Tl0.75Cu0.25Ba2Ca3Cu4Oy in the range 10K-300K, however here we limit our discussion to the spectrum at 300 K. This material is prepared under high pressure [3.5 GPa] from precur...

The synthesis of novel, homoleptic group 13 alkoxides is presented. M(OCH(CH2NR2)2)3, where M=Al, Ga, In and R=Me, Et, are characterised by room temperature NMR spectroscopy and single-crystal XRD showing the monomeric nature of all aminoalcoholates. Graphical abstract

X-ray diffraction (XRD), EDAX, AC susceptibility and resistivity measurements has been used as characterization methods for the Bi-2223 monophase target with the starting stoichiometry Bil.8F%,.3Sr2Ca2C~3.3 a. Pressure parameter is playing an important role in obtaining good superconducting properties for this compound. Critical currents and activation energy has been calculated from susceptibi...

Ceria-titania solutions with compositions of Ce0.9Ti0.1O2 and Ce0.8Ti0.2O2 were prepared by the citric-acid (Pechini) method and characterized using x-ray diffraction (XRD) for structure, coulometric titration for redox thermodynamics, and water-gas-shift (WGS) reaction rates. Following calcination at 973 K, XRD suggests that the mixed oxides exist as single-phase, fluorite structures, although...

Wet chemistry methods are used to prepare the SiO2/Au nanoshells. The purpose of this research was to synthesize gold coated SiO2 nanoshells for biomedical applications. Tunable nanoshells were prepared by using different colloidal concentrations. The nanoshells are characterized by FTIR, XRD, UV-Vis spectroscopy and atomic force microscopy (AFM). The FTIR results confirmed the functionalizatio...

In this work, nanostructured CdO films with different coumarin contents in the growth solution were fabricated on glass substrates by the SILAR method. The effects of coumarin content in the bath on optical, structural and morphological properties were studied by means of (UV–vis) spectrophotometer, SEM and XRD analysis. The analysis showed that the band gaps, surface morphologies and XRD peak ...

Undoped and cobalt-doped (1-4 wt%) ZnO polycrystalline, thin films have been fabricated on quartz substrates using sequential spin-casting and annealing of simple salt solutions. X-ray diffraction (XRD) reveals a wurzite ZnO crystalline structure with high-resolution transmission electron microscopy showing lattice planes of separation 0.26 nm, characteristic of (002) planes. The Co appears to ...

The formation of Pd carbide (PdCx) during the synthesis of vinyl acetate (VA) was investigated over Pd/SiO2 catalysts with two different Pd particle sizes, as well as over a Pd–Au/SiO2 mixed-metal catalyst. XRD data show that PdCx was produced in the pure Pd catalysts after reaction based on the downshift of the Pd(111) and (200) XRD features. The smaller Pd particles showed greater resistance ...

In this paper, we have reported convenient way to access CdTe nanorods by solvothermal decomposition using single source molecular precursor cadmium (II) bis-(isopropyl telluro) propane (SSMP) and quinoline as solvent at relatively low temperature (200oC).As synthesized nanomaterials are structurally characterized by XRD, SEM and UVVisible spectroscopy. SEM micrographs revealed formation of rod...