Nitride Spinel: An Ultraincompressible High-Pressure Form of BeP₂ N₄.

ABSTRACT: Owing to its outstanding elastic properties, the nitride spinel γ-Si₃ N₄ is of considered interest for materials scientists and chemists. DFT calculations suggest that Si₃ N₄ -analog beryllium phosphorus nitride BeP₂ N₄ adopts the spinel structure at elevated pressures as well and shows outstanding elastic properties. Herein, we investigate phenakite-type BeP₂ N₄ by single-crystal synchrotron X-ray diffraction and report the phase transition into the spinel-type phase at 47 GPa and 1800 K in a laser-heated diamond anvil cell. The structure of spinel-type BeP₂ N₄ was refined from pressure-dependent in situ synchrotron powder X-ray diffraction measurements down to ambient pressure, w

SUBMITTER: Vogel S 

PROVIDER: S-EPMC7027884 | biostudies-literature | 2020 Feb

REPOSITORIES: biostudies-literature