Local order and electrical properties of boron carbonitride films
(1995) Carbon — Vol. 33, n° 12, p. 1747-1757 (1995)
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- Thin films of carbon-boron-nitrogen alloys were prepared by chemical vapor deposition from gaseous mixtures of C2H2, BCl3, NH3, and H-2. Their turbostratic graphitic structure was investigated by electron probe micro analysis (EPMA), X-ray diffraction (XRD), Raman spectroscopy, and nuclear magnetic resonance. Those compounds were shown to be solid solutions with compositions varying in a continuous domain bounded by carbon, boron nitride, and BC3. Measurements of the electrical transport properties (conductivity and Hall coefficient) were performed from 295 down to 4.2 K and in the presence of magnetic fields up to 5 T. The behavior of these solid solutions can be interpreted in terms of a metal-non metal transition, when the carbon content decreases. Heat-treatment of these compounds between 1400 and 2000 degrees C involves strongly modified transport properties. The resistivity of all materials is lowered. But the main property change is that of the magnetoresistance.
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Filipozzi, L., Derre, A., Conard, J., Piraux, L., & Marchand, A. (1995). Local order and electrical properties of boron carbonitride films. Carbon, 33(12), 1747-1757. https://doi.org/10.1016/0008-6223(95)00149-7 (Original work published 1995)