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The aim of this contribution is to present the properties of the nanostructured hydrogenated carbon thin films and to study their growth carried out in a special deposition technique based on Thermionic Vacuum Arc method. The Gaseous Thermionic Vacuum Arc (G-TVA) technology is an original deposition method performed in a special configuration, consisting of a heated thermionic cathode which provides an electron beam on the anode. The surface free energy was evaluated by contact angle and their optical properties were studied by Filmetrics F20 spectrometry system. Structure of the film has been investigated by Raman spectroscopy as well as the mechanical properties like hardness, wear resistance, film-substrate adhesion. The films showed two distinct Raman characteristic peaks located at 1,350 cm (D-line) and 1,550 cm (G-line), broad for Si and very sharp for glass substrates. The G-TVA enables to prepare soft (hardness ~6 GPa) or hard (~24 GPa) films. [ABSTRACT FROM AUTHOR]

Lanthanum lithium titanate, belonging to the solid solution La0.66Li0.33TiO3, was prepared by sol–gel method from LiNO3, La(NO3)3·6H2O and Ti(OC4H9)4 in ideal cation stoichiometry for La0.66Li0.33TiO3. The synthesized product was characterized by X-ray powder diffractometry (XRD) and thermal analyses (DTA-TG). Electron microscopy investigations (SEM and TEM) was used to evaluate the morphology of synthesized La0.66Li0.33TiO3. The bulk quantities of nano-sized particles of layered La0.66Li0.33TiO3 have been obtained at 1,000°C using the modified sol–gel method. The mean diameter of La0.66Li0.33TiO3 nano-crystals was about 123 nm. [ABSTRACT FROM AUTHOR]

The aim of this paper is to report the results of a systematic high-resolution transmission electron microscopy study on Al18B4O33. The fluxing agent method permits the formation of needle-shaped whiskers of Al18B4O33, having sub-micron thickness with a tendency to come and fuse together. Amounts of 25% and 50% K2SO4, K2CO3 or KCl were used liked fluxing agents. Using this method, the optimum temperature for the synthesised compound was found to be 1000 °C. The investigation techniques were X-ray diffraction and electron microscopy. [ABSTRACT FROM AUTHOR]

Single phase LiNixCo1-xO2 (x=0.3) with fine particles were prepared by two low-temperature methods: the modified Pechini sol-gel method and the Self-Propagating Combustion Synthesis (SPCS). It was found that bulk quantities of nano-sized particles of layered LiNixCo1-xO2 could be obtained at temperatures below 400 °C by these solutions technique. The synthesized products were characterized by structural (XRD) and thermal (DTA-TG) analyses. HRTEM was used to evaluate the purity and the phase composition of LiNixCo1-xO2. Lattice plane images give information about crystal structure and SAED patterns help us to identify the phase. Nano-crystals were obtained with minimum mean diameter about 5 nm for both methods. [ABSTRACT FROM AUTHOR]