Materials Data on Y3Al2 by Materials Project

Abstract

Y3Al2 crystallizes in the tetragonal P4_2/mnm space group. The structure is three-dimensional. there are three inequivalent Y sites. In the first Y site, Y is bonded in a distorted square co-planar geometry to four equivalent Al atoms. All Y–Al bond lengths are 3.32 Å. In the second Y site, Y is bonded in a 6-coordinate geometry to six equivalent Al atoms. There are four shorter (3.11 Å) and two longer (3.13 Å) Y–Al bond lengths. In the third Y site, Y is bonded in a 6-coordinate geometry to six equivalent Al atoms. There are two shorter (3.07 Å) and four longer (3.23 Å) Y–Al bond lengths. Al is bonded in a 10-coordinate geometry to eight Y and two equivalent Al atoms. There are one shorter (2.77 Å) and one longer (3.02 Å) Al–Al bond lengths.