|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Frontiers in Materials Science, Engineering, and Technology: An FMD Symposium in Honor of Sungho Jin
||Pulsed Laser Deposition of Cubic Boron Nitride Films
||Ariful Haque, Anagh Bhaumik, Jagdish Narayan
|On-Site Speaker (Planned)
We have synthesized thin films of cubic boron nitride (c-BN) on c-sapphire and r-sapphire substrates using pulsed laser processing technique. A hexagonal boron nitride target was ablated by a pulsed KrF nanosecond excimer laser with 248 nm wavelength. The films were characterized by micro Raman spectroscopy, scanning electron microscopy (SEM), electron back scattered diffraction (EBSD), UV-Vis spectroscopy, and transmission electron microscopy (TEM) techniques. The micro Raman spectra, EBSD patterns, and the electron diffraction patterns from the specimens provide unambiguous evidence of the epitaxial growth of the c-BN phase. By varying the substrate temperature and the laser energy density we have performed a detailed study of microstructures of c-BN. We are able to control the grain size by controlling the growth parameters and we obtained improved epitaxy in the c-BN structures at higher growth temperature and higher energy density of the laser pulses.
||Planned: Supplemental Proceedings volume