Fluid synthesis and structure of a new polymorphic modification of boron nitride
Abstract
A new previously unknown phase of boron nitride with a hardness of 0.41–0.63 GPa has been pre-pared by the supercritical fluid synthesis. The presence of a new phase is confirmed by the X-ray spectra and IR absorption spectra, where new reflections and bands are distinguished. The fundamental reflection of the X-ray diffraction pattern is d = 0.286–0.291 nm, and the characteristic band in the infrared absorption spectrum is observed at 704 cm‑1. The X-ray diffraction pattern and the experimental and theoretical infrared absorption spectra show that a new synthesized boron nitride phase can be a cluster crystal (space group 211) with a simple cubic lattice. Cage clusters of a fullerene-like morphology B24N24 with point symmetry O are arranged in lattice sites.
- Publication:
-
Physics of the Solid State
- Pub Date:
- April 2013
- DOI:
- 10.1134/S1063783413040240
- Bibcode:
- 2013PhSS...55..878P
- Keywords:
-
- Zeolite;
- Fullerene;
- Boron Nitride;
- Cluster Crystal;
- Equilibrium Lattice Parameter