Exploring the electronic, mechanical, and anisotropy properties of novel tetragonal B2CO phase View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

2019-09-20

AUTHORS

Mingwei Chen, Chao Liu, Meiling Liu, Uppalapati Pramod Kumar, Zihe Li, Lingyu Liu, Julong He, Tongxiang Liang

ABSTRACT

A novel tetragonal B2CO structure (tP16-B2CO), formed by strong covalent sp2–sp3 B–C and B–O bonds, was predicted with aid of an unbiased structure searching method. With the energy lower than those of previously proposed candidates, except ol16-B2CO, tP16-B2CO was identified as the thermodynamic metastable phase for B2CO compound. The elastic matrix and phonon dispersion spectra declare that tP16-B2CO is mechanically and dynamically stable. The electronic band structure calculation at ambient pressure and a series of high pressure has manifested the indirect semiconducting and band gap increases first and then decreases with pressure increases. The calculation of mechanical properties such as hardness and stress–strain relations of tP16 structure revealed its common hard nature with high hardness of 23.19 GPa and anisotropy with the max stress along [001] is far higher than that along [100]. More... »

PAGES

3617-3626

Identifiers

URI

http://scigraph.springernature.com/pub.10.1557/jmr.2019.271

DOI

http://dx.doi.org/10.1557/jmr.2019.271

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1121164794


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