Materials Data on Er2FeGe4 by Materials Project
Er2FeGe4 crystallizes in the orthorhombic Amm2 space group. The structure is three-dimensional. there are two inequivalent Er sites. In the first Er site, Er is bonded in a 10-coordinate geometry to ten Ge atoms. There are a spread of Er–Ge bond distances ranging from 2.97–3.12 Å. In the second Er site, Er is bonded in a 4-coordinate geometry to four equivalent Fe and ten Ge atoms. All Er–Fe bond lengths are 3.26 Å. There are a spread of Er–Ge bond distances ranging from 3.06–3.31 Å. Fe is bonded in a 5-coordinate geometry to four equivalent Er and five Ge atoms. There are a spread of Fe–Ge bond distances ranging from 2.29–2.32 Å. There are four inequivalent Ge sites. In the first Ge site, Ge is bonded in a 1-coordinate geometry to six Er, one Fe, and two equivalent Ge atoms. Both Ge–Ge bond lengths are 2.68 Å. In the second Ge site, Ge is bonded in a 8-coordinate geometry to six Er and two equivalent Ge atoms. In the third Ge site, Ge is bonded in a 2-coordinate geometry to four Er, two equivalent Fe, and four equivalent Ge atoms. All Ge–Ge bond lengths are 2.93 Å. In the fourth Ge site, Ge is bonded in a 2-coordinate geometry to four Er, two equivalent Fe, and four equivalent Ge atoms.