Materials Data on Tb3Ge4 by Materials Project

Abstract

Tb3Ge4 crystallizes in the orthorhombic Cmcm space group. The structure is three-dimensional. there are two inequivalent Tb sites. In the first Tb site, Tb is bonded in a 8-coordinate geometry to eight Ge atoms. There are a spread of Tb–Ge bond distances ranging from 2.99–3.11 Å. In the second Tb site, Tb is bonded in a 5-coordinate geometry to seven Ge atoms. There are a spread of Tb–Ge bond distances ranging from 2.93–3.19 Å. There are three inequivalent Ge sites. In the first Ge site, Ge is bonded in a 9-coordinate geometry to six Tb and three Ge atoms. There are one shorter (2.62 Å) and two longer (2.88 Å) Ge–Ge bond lengths. In the second Ge site, Ge is bonded in a 9-coordinate geometry to seven Tb and two equivalent Ge atoms. In the third Ge site, Ge is bonded in a 4-coordinate geometry to four equivalent Tb and four equivalent Ge atoms.