Elastic properties of 5d transition-metal carbides: An ab initio study

We have systematically studied the mechanical stability of group V transition metal carbides TMC<sub>2</sub> (TM=Hf, Ta, W, Re, Os, Ir, Pt, and Au) in the pyrite and fluorite phase, by calculating their elastic constants within the density functional theory scheme. It was found that all...

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Bibliographic Details
Main Authors: L. Mex, A. Aguayo, G. Murrieta
Format: Article
Language:English
Published: Institute for Condensed Matter Physics 2015-09-01
Series:Condensed Matter Physics
Subjects:
Online Access:http://dx.doi.org/10.5488/CMP.18.33801
Description
Summary:We have systematically studied the mechanical stability of group V transition metal carbides TMC<sub>2</sub> (TM=Hf, Ta, W, Re, Os, Ir, Pt, and Au) in the pyrite and fluorite phase, by calculating their elastic constants within the density functional theory scheme. It was found that all but ReC<sub>2</sub> and OsC<sub>2</sub> are stable in pyrite phase. On the other hand, all metal carbides studied were unstable in the fluorite phase.
ISSN:1607-324X