We employ ab initio plane-wave pseudo potential density functional theory to calculate the equilibrium lattice parameters,elastic constants,anisotropies,Poisson's ratios,and the Cauchy violation under hydrostatic pressures of 0—60 GPa for BC5 with hexagonal P3m1 and tetragonal I4m2 structures.The results show that two structures are stable under high pressure and the incompressibility increases with pressure.In addition,the electron structures,the total and the partial densities of states are also calculate...
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