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ormation of Nanosized Inclusions in Cubic Boron Nitride Single Crystals |
LIU Yu-Xian;XIAO Li-Mei;YIN Long-Wei |
School of Materials Science and Engineering, Shandong University, Ji’nan 250061 |
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Cite this article: |
LIU Yu-Xian, XIAO Li-Mei, YIN Long-Wei 2002 Chin. Phys. Lett. 19 1649-1652 |
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Abstract Cubic boron nitride (c-BN) crystals with dimensions of 0.3-0.4 mm, which have been synthesized using lithium nitride (Li3N) as a catalyst with a high-pressure high-temperature method, were examined by transmission electron microscopy (TEM). The TEM result shows that there exits some nanostructrued areas containing several types of nanosized foreign particles within the as-grown c-BN crystals. We find that the nanometer inclusions are hexagonal BN with the lattice constants of a = 2.054Å and c = 6.66Å, tetragonal B25N with a = 8.79Å and c = 5.08Å, tetragonal B53N with a = 8.79Å and c = 5.08Å, and hexagonal Li3N with a = 3.648Å and c = 3.875Å.
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Keywords:
61.16.Bg
61.72.Qq
81.10.-h
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Published: 01 November 2002
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PACS: |
61.16.Bg
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61.72.Qq
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(Microscopic defects (voids, inclusions, etc.))
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81.10.-h
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(Methods of crystal growth; physics and chemistry of crystal growth, crystal morphology, and orientation)
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