Materials Data on TaFe2 by Materials Project

Abstract

TaFe2 is Hexagonal Laves structured and crystallizes in the hexagonal P6_3/mmc space group. The structure is three-dimensional. Ta is bonded in a 12-coordinate geometry to four equivalent Ta and twelve Fe atoms. There are one shorter (2.91 Å) and three longer (2.95 Å) Ta–Ta bond lengths. There are a spread of Ta–Fe bond distances ranging from 2.80–2.84 Å. There are two inequivalent Fe sites. In the first Fe site, Fe is bonded to six equivalent Ta and six equivalent Fe atoms to form a mixture of edge, face, and corner-sharing FeTa6Fe6 cuboctahedra. All Fe–Fe bond lengths are 2.42 Å. In the second Fe site, Fe is bonded to six equivalent Ta and six Fe atoms to form a mixture of edge, face, and corner-sharing FeTa6Fe6 cuboctahedra. There are two shorter (2.37 Å) and two longer (2.41 Å) Fe–Fe bond lengths.