Results for “Au-Eu-Si” | Engineering Papers

DOE OSTI2020

Materials Data on Eu(SiAu)2 by Materials Project

Eu(AuSi)2 crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. Eu2+ is bonded in a 8-coordinate geometry to eight equivalent Au1- atoms. All Eu–Au bond lengths are 3.37 Å. Au1- is bonded to four equivalent Eu2+ and four equivalent Si atoms to form a mixture of distorted edge, face, and corner-sharing AuEu4Si4 tetrahedra. All Au–Si bond lengths are 2.59 Å. Si is bonded in a 5-coordinate geometry to four equivalent Au1- and one Si atom. The Si–Si bond length is 2.35 Å.

36 MATERIALS SCIENCE↗

DOE OSTI2020

Materials Data on Eu2Si3Au by Materials Project

Eu2AuSi3 is hexagonal omega structure-derived structured and crystallizes in the hexagonal P-6m2 space group. The structure is three-dimensional. Eu+2.50+ is bonded to three equivalent Au1- and nine Si+1.33- atoms to form a mixture of face and edge-sharing EuSi9Au3 cuboctahedra. All Eu–Au bond lengths are 3.28 Å. There are three shorter (3.28 Å) and six longer (3.31 Å) Eu–Si bond lengths. Au1- is bonded in a distorted trigonal planar geometry to six equivalent Eu+2.50+ and three equivalent Si+1.33- atoms. All Au–Si bond lengths are 2.44 Å. There are three inequivalent Si+1.33- sites. In the first Si+1.33- site, Si+1.33- is bonded in a 9-coordinate geometry to six equivalent Eu+2.50+ and three equivalent Si+1.33- atoms. All Si–Si bond lengths are 2.44 Å. In the second Si+1.33- site, Si+1.33- is bonded in a distorted trigonal planar geometry to six equivalent Eu+2.50+ and three equivalent Au1- atoms. In the third Si+1.33- site, Si+1.33- is bonded in a 9-coordinate geometry to six equivalent Eu+2.50+ and three equivalent Si+1.33- atoms.

36 MATERIALS SCIENCE↗