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A series of single AlN and SiC thin films as well as SiC/AlN double layers were investigated by FTIR spectroscopy (reflection and transmission) and by Raman microscopy. The films (100-1200 nm thick) were prepared by laser ablation on Si(111) substrates at a relatively low temperature (800 o C) to prevent thermal decomposition of the nitride. Raman spectra showed the formation of nanocrystalline...
Ceramic silicon carbide (SiC) based fibres treated by a laser induced chemical vapour deposition process (LCVD) have been investigated by MIR-FTIR reflectance microscopy. A significant change of the spectral behaviour has been detected after laser irradiation and after fibre coating. A strong SiC resonance appears and the damped interference waves in the short wavelength region vanish simultaneously...
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