Materials Data on Ho2FeSi4 by Materials Project
Ho2FeSi4 crystallizes in the orthorhombic Amm2 space group. The structure is three-dimensional. there are two inequivalent Ho3+ sites. In the first Ho3+ site, Ho3+ is bonded in a 10-coordinate geometry to ten Si2- atoms. There are a spread of Ho–Si bond distances ranging from 2.90–3.01 Å. In the second Ho3+ site, Ho3+ is bonded in a 10-coordinate geometry to ten Si2- atoms. There are a spread of Ho–Si bond distances ranging from 2.97–3.17 Å. Fe2+ is bonded in a 5-coordinate geometry to five Si2- atoms. There are a spread of Fe–Si bond distances ranging from 2.20–2.26 Å. There are four inequivalent Si2- sites. In the first Si2- site, Si2- is bonded in a 9-coordinate geometry to six Ho3+, one Fe2+, and two equivalent Si2- atoms. Both Si–Si bond lengths are 2.54 Å. In the second Si2- site, Si2- is bonded in a 8-coordinate geometry to six Ho3+ and two equivalent Si2- atoms. In the third Si2- site, Si2- is bonded in a 2-coordinate geometry to four Ho3+ and two equivalent Fe2+ atoms. In the fourth Si2- site, Si2- is bonded in a 2-coordinate geometry to four Ho3+ and two equivalent Fe2+ atoms.