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Synthesis of carbon nitride crystals at high pressures and temperatures

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Abstract

Carbon nitride crystals have been synthesized from C3N4H4 in the presence of a nickel-based alloy or cobalt as a catalyst at high pressure of 7 GPa and temperature of about 1400 °C. Scanning electron microscopy showed rod-like, well-faceted crystals with size of several micrometers, and the N content in these carbon nitride crystals was 47–62%. X-ray diffraction indicated the crystals were composed of α–C3N4 and β–C3N4. The experimental lattice constants of α–C3N4 (a = 6.425 Å, c = 4.715 Å ) and β–C3N4 (a = 6.419 Å, c = 2.425 Å ) agree with ab initio calculations very well.

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Authors and Affiliations

  1. Institute of Physics, Chinese Academy of Science, P.O. Box 603 (34), 100080, Beijing, People’s Republic of China

    D. W. He, F. X. Zhang, X. Y. Zhang, Z. C. Qin, M. Zhang, R. P. Liu, Y. F. Xu & W. K. Wang

  2. Yan Shan University, 006604, Qinhuandao, People’s Republic of China

    R. P. Liu & W. K. Wang

Authors
  1. D. W. He
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  2. F. X. Zhang
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  3. X. Y. Zhang
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  4. Z. C. Qin
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  5. M. Zhang
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  6. R. P. Liu
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  7. Y. F. Xu
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  8. W. K. Wang
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He, D.W., Zhang, F.X., Zhang, X.Y. et al. Synthesis of carbon nitride crystals at high pressures and temperatures. Journal of Materials Research 13, 3458–3462 (1998). https://doi.org/10.1557/JMR.1998.0471

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  • DOI: https://doi.org/10.1557/JMR.1998.0471

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