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Decomposition of palladium acetate and C60 fullerite during thermal evaporation in PVD process

Rymarczyk J., Czerwosz E., Diduszko R., Kozłowski M.

Materials Science Poland

2017

Vol. 35, No. 3

594--600

The mechanisms of thermal decomposition of evaporated material during Physical Vapor Deposition (PVD) process depend on the kind of evaporated material. Such parameters of PVD process as deposition rate, source temperature and deposition time should be carefully selected taking into account the properties of material. Deposited films can span the range of chemical compositions based on the source materials. The nanostructural carbon films in form of palladium nanograins embedded in various carbonaceous matrixes were obtained by thermal evaporation during PVD process from two separated sources containing C60 fullerite and palladium acetate, both in a form of powder. The evaporation was realized by resistive heating of sources under a dynamic vacuum of 10−3 Pa. The influence of decomposition path of evaporated materials on the film structure has been discussed. Prepared C-Pd films were characterized using thermo-gravimetric method, differential thermal analysis, infrared spectroscopy and X-ray diffraction. The influence of decomposition of Pd acetate and fullerite on the final film structure was also shown.

Studies on high pressure-high temperature synthesis of carbon clathrates

Leszczyński J., Wojciechowski K., Koleżyński A., Klimczyk P.

Mechanik

2016

R. 89, nr 5-6

512--513

Ab initio DFT calculations were used for theoretical analysis of crystal and electronic structure of C46, Li8C46 and Li8B6C40 carbon clathrates. Simultaneously experimental attempts of carbon clathrates synthesis from fullerene C60 at pressure 8 GPa were made. For a specific conditions polymerized form of fullerene – fullerite was obtained.

Przeprowadzono obliczenia ab initio metodą DFT w celu analizy struktury krystalicznej i elektronowej hipotetycznych klatratów węglowych C46, Li8C46 i Li8B6C40. Jednocześnie podjęto próby syntezy klatratów węglowych z fullerenu C60 pod ciśnieniem 8 GPa. W pewnych warunkach otrzymano spolimeryzowaną formę fullerenu – fulleryt.