Search

Your search keyword '"Swain, Bibhu"' showing total 629 results
Start Over Author "Swain, Bibhu"
629 results on '"Swain, Bibhu"'

3. Nitrogen flow rate dependent atomic coordination, phonon vibration and surface analysis of DC Magnetron sputtered Nitrogen rich-AlN thin films

Author

Madhuri, Aishwarya, Jena, Sanketa, Gupta, Mukul, and Swain, Bibhu Prasad

Subjects
Condensed Matter - Materials Science
Abstract

In this work, the effect on crystallite orientation, surface morphology, fractal geometry, structural coordination and electronic environment of DC magnetron sputtered AlN films were investigated. X-ray diffraction results disclosed that the c-axis orientation of AlN films increased with the preferred wurtzite hexagonal structure above 17% N2 flow. X-ray reflectivity data confirmed AlN film density increased with increasing N2 flow and was found to be 3.18g/cm3 for 40% N2. The transition of electrons from N 1s to 2p states hybridized with Al 3p states because of {\pi}* resonance was obtained from X-ray absorption spectroscopy of the N K-edge. The semi-empirical coordination geometry of nitrogen atoms has been studied by deconvolution of N K-edge. The surface composition of AlN films at 40% N2 consists of 32.08, 51.94 and 15.97at.% Al, N and O respectively. Blue-shifting of A1(LO) and E1(LO) modes in the Raman spectra at phonon energies 800 and 1051cm-1 respectively was most likely due to the presence of oxygen bonds in the AlN films.

Published
2023
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results