Abstract
AbstractSome of the three-dimensional (3D) crystal structures are constructed by stacking two-dimensional (2D) layers. To study whether this geometric concept, i.e., using 2D layers as building blocks for 3D structures, can be applied to computational materials design, we theoretically investigate the dynamical stability of copper-based compounds CuX (a metallic element X) in the B$$_h$$
h
and L1$$_1$$
1
structures constructed from the buckled honeycomb (BHC) structure and in the B2 and L1$$_0$$
0
structures constructed from the buckled square (BSQ) structure. We demonstrate that (i) if CuX in the BHC structure is dynamically stable, those in the B$$_h$$
h
and L1$$_1$$
1
structures are also stable. Using molecular dynamics simulations, we particularly show that CuAu in the B$$_h$$
h
and L1$$_1$$
1
structures withstand temperatures as high as 1000 K. Although the interrelationship of the metastability between the BSQ and the 3D structures (B2 and L1$$_0$$
0
) is not clear, we find that (ii) if CuX in the B2 (L1$$_0$$
0
) structure is dynamically stable, that in the L1$$_0$$
0
(B2) is unstable. This is rationalized by the tetragonal Bain path calculations.
Publisher
Springer Science and Business Media LLC
Cited by
4 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献