Metallic Oxynitride Thin Films by Reactive Sputtering and Related Deposition Methods: Process, Properties and Applications


Filipe Vaz, Nicolas Martin, Martin Fenker

DOI: 10.2174/97816080515641130101
eISBN: 978-1-60805-156-4, 2013
ISBN: 978-1-60805-157-1

Indexed in: EBSCO.

Oxynitride thin film technology is rapidly impacting a broad spectrum of applications, ranging from decorative functions (through opto...[view complete introduction]
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A Comprehensive Study of the Properties of Sputtered NbO<sub>x</sub>N<sub>y</sub> Thin Films

- Pp. 163-194 (32)

Martin Fenker


Niobium oxynitride thin films have been deposited by reactive magnetron sputtering. A niobium target has been sputtered in an Ar/N<sub>2</sub>/O<sub>2</sub> atmosphere with different gas compositions. With Rutherford backscattering spectroscopy (RBS), particle induced X-ray emission (PIXE) and energy dispersive X-ray spectroscopy (EDX) the chemical composition was acquired. Scanning electron microscopy (SEM), atomic force microscopy (AFM) and X-ray diffraction (XRD) allowed studying the microstructure of the deposited films. The electrical conductivity and the optical properties were measured by the four point probe method and spectroscopic ellipsometry. With increasing O/N ratio in the films the electrical resistance and the optical transparency increased. Mechanical properties, like indentation hardness, indentation modulus, residual stress and the tribological behaviour, have been investigated with respect to the O/N ratio. The corrosion behaviour was studied by potentiodynamic corrosion tests and neutral salt spray testing. Furthermore, the degradation behaviour of the NbON films has been tested in artificial sweat. The thermal and oxidation behaviour have been observed in vacuum and in air. Finally, the biocompatibility and the wetting behaviour of the NbON films have been examined.

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