Synthesis and characterization of GaN powder by the cyanonitridation of gallium oxide powder

Title
Synthesis and characterization of GaN powder by the cyanonitridation of gallium oxide powder
Author(s)
정우식
Keywords
ALUMINUM NITRIDE; METAL NITRIDES; DELTA-ALUMINA; NITROGEN; FLOW; NMR; NANOPARTICLES; MECHANISM; MELAMINE; AMMONIA
Issue Date
201209
Publisher
ELSEVIER SCI LTD
Citation
CERAMICS INTERNATIONAL, v.38, no.7, pp.5741 - 5746
Abstract
Gallium nitride (GaN) powder was synthesized by the cyanonitridation of beta-gallium oxide (beta-Ga2O3) powder and characterized by powder X-ray diffraction, Ga-71 magic-angle spinning nuclear magnetic resonance spectroscopy, Raman spectroscopy, and scanning electron microscopy. The cyano radical, which was formed by the thermal decomposition of organic compounds such as acetonitrile and melamine, was involved in the nitridation of beta-Ga2O3. The formation of GaN via cyanonitridation commenced at slightly higher temperature than that via ammonolysis. The produced GaN powders showed five first-order phonon modes in Raman spectra. Particles' morphologies were maintained during cyanonitridation, indicating that the beta-Ga2O3 did not convert to GaN through gaseous species such as Ga2O. (c) 2012 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
URI
http://hdl.handle.net/YU.REPOSITORY/27291http://dx.doi.org/10.1016/j.ceramint.2012.04.019
ISSN
0272-8842
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공과대학 > 화학공학부 > Articles
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