Pressure-induced stability and polymeric nitrogen in alkaline earth metal N-rich nitrides (XN6, X = Ca, Sr and Ba): a first-principles study

Author:

Liu Zhipeng1234,Wei Shuli1234ORCID,Guo Yanhui1234,Sun Haiyang1234,Sun Hao1234,Chang Qiang1234,Sun Yuping1234ORCID

Affiliation:

1. School of Physics and Optoelectronic Engineering

2. Shandong University of Technology

3. 250049 Zibo

4. China

Abstract

The Fddd-SrN6 structure can transform into P1̄-SrN6, and polymerized to infinite nitrogen chain structures at P = 22 GPa. For BaN6, the Fmmm-BaN6 structure can transform into C2/m-BaN6, and polymerized to N6 ring network structure at P = 110 GPa.

Funder

Natural Science Foundation of Shandong Province

Shandong University of Technology

Publisher

Royal Society of Chemistry (RSC)

Subject

General Chemical Engineering,General Chemistry

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