The structure and optical properties of AlN thin films synthesized at 800°C by Pulsed Laser Deposition were studied in
terms of ambient nitrogen pressure (10-4-10 Pa) and post-deposition cooling rate (5-25°C/min). X-ray diffraction
patterns showed the films were polycrystalline with predominantly cubic phase and small-sized crystallites. The
refractive index and oscillator energies values were also characteristic of the polycrystalline AlN with cubic structure.
In the present paper, a study concerning the in-vitro behaviour of Hydroxyapatite films obtained by Pulsed Laser
Deposition technique on titanium under different conditions was performed. The structures were immersed in Hank's
Solution for 21 days in accurately controlled environment conditions. Both film and immersion solution changes were
analyzed by means of XRD, SEM, EDX and X-Ray fluorescence respectively.
The obtained results point to an excellent behaviour of the obtained films as bioactive structures, recommending this type
of covering for further analysis in view of its use in orthopedic and dental implantology.
In this paper, we report some experimental results concerning new aspects in laser ablation process of the YBCO thin film. Both structural and superconducting properties of the studied films were analyzed by transmission electron microscopy, selected area electron diffraction, elastic recoil detection analysis, Raman spectra, atomic force microscopy images and the ac magnetic susceptibility. We have obtained the epitaxial films with relative large area of c-axis grown film and high critical temperature, without any post ablation annealing process.
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