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Transition from amorphous boron carbide to hexagonal boron carbon nitride thin films induced by nitrogen ion assistance
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2002 (English)In: Journal of Applied Physics, ISSN 0021-8979, Vol. 92, no 9, 5177-5182 p.Article in journal (Refereed) Published
Abstract [en]

Boron carbon nitride films (BCN) were grown by B4C evaporation under concurrent N-2 ion beam assistance. The films were characterized by x-ray absorption near-edge spectroscopy, infrared and Raman spectroscopies, and high-resolution transmission electron microscopy. The bonding structure and film composition correlate with the momentum transfer per incoming atom during deposition. As the momentum transfer is increased, the film structure evolves from an amorphous boron carbide network towards a hexagonal ternary compound (h-BCN) with standing basal planes. The growth of h-BCN takes place for momentum transfer in the window between 80 and 250 (eVxamu)(1/2). The characteristic vibrational features of the h-BCN compounds have also been studied. Finally, the solubility limit of carbon in the hexagonal BN structure, under the working conditions of this article, is found to be similar to15 at. %. (C) 2002 American Institute of Physics.

Place, publisher, year, edition, pages
2002. Vol. 92, no 9, 5177-5182 p.
National Category
Engineering and Technology
URN: urn:nbn:se:liu:diva-47846DOI: 10.1063/1.1512317OAI: diva2:268742
Available from: 2009-10-11 Created: 2009-10-11 Last updated: 2016-08-31

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Hultman, Lars
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The Institute of TechnologyThin Film Physics
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