Materials Data on Ca3Dy by Materials Project

Abstract

Ca3Dy is beta Cu3Ti-like structured and crystallizes in the hexagonal P6_3/mmc space group. The structure is three-dimensional. Ca is bonded to eight equivalent Ca and four equivalent Dy atoms to form CaCa8Dy4 cuboctahedra that share corners with four equivalent DyCa12 cuboctahedra, corners with fourteen equivalent CaCa8Dy4 cuboctahedra, edges with six equivalent DyCa12 cuboctahedra, edges with twelve equivalent CaCa8Dy4 cuboctahedra, faces with four equivalent DyCa12 cuboctahedra, and faces with sixteen equivalent CaCa8Dy4 cuboctahedra. There are a spread of Ca–Ca bond distances ranging from 3.69–3.86 Å. There are two shorter (3.77 Å) and two longer (3.78 Å) Ca–Dy bond lengths. Dy is bonded to twelve equivalent Ca atoms to form DyCa12 cuboctahedra that share corners with six equivalent DyCa12 cuboctahedra, corners with twelve equivalent CaCa8Dy4 cuboctahedra, edges with eighteen equivalent CaCa8Dy4 cuboctahedra, faces with eight equivalent DyCa12 cuboctahedra, and faces with twelve equivalent CaCa8Dy4 cuboctahedra.