Relaxed five possible hexagonal structures constructed from -graphite structure.
(a) The calculated formation energy vs hydrostatic pressure of and (b) previously predicted , (c) and the relative volume vs hydrostatic pressure of graphite, BN, and .
(a) Band structure and (b) enlarged band structure near point and point of .
The relaxed structural parameters, densities , total energy , and formation energy of five graphitelike , -graphite, and .
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