#
c-BN

K.Parlinski,

Lattice dynamics of cubic BN

J.Alloys & Compounds, 328, 97 (2001).

Crystal: **Boron nitrate BN**

Software: * Ab initio* VASP ver. 4.3.3.

Space group: cubic, F-43m (Z=1)

Lattice constants: a=3.620 angst.

Supercell: 2x2x2.

Pseudopotentials: ultrasoft of Vanderbilt.

k-points: 2x2x2.
phase transition.

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Phonon dispersion relations of cubic boron nitrate BN:

Squares comes from elongated (1x1x10) supercell calculations,
and demonstrate the LO/TO splitting.