Theoretical calculations of hardness and metallicity for multibond hexagonal 5d transition metal diborides with ReB2 structure
Yang Jun1, 2, †, Gao Fa-Ming3, Liu Yong-Shan4
       

(color online) Crystal structure for 5d transition metal diborides with ReB2 structure 5d transition metal and boron atoms are shown as larger and smaller spheres, respectively.