English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

The effect of high pressures, up to 40 GPa, on the structural and elastic properties of sodium oxide in cubic structure ( c -Na 2 O) were investigated by first-principles calculations. The generalized gradient approximation (GGA) with the Perdew-Burke-Ernzerhof (PBE) functional was employed in the calculations. The calculated structural and elastic properties at zero pressure are consistent with the available results. The pressure dependence of structural and elastic properties was presented and discussed in detail. Under pressure, the elastic constants satisfy the Born criteria, indicating that  c -Na 2 O is mechanically stable. Moreover, other elastic properties such as bulk modulus ( B ), shear modulus ( G ), and Young's modulus ( E ) under pressures were analyzed. Furthermore, the  B / G  values tend to increase with the increasing pressure, which means that pressure can improve the ductility of  c -Na 2 O.

Pressure Dependence of Structural and Elastic Properties of Na 2 O: First-Principles Calculations