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All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on Sr3U by Materials Project

Sr3U is alpha bismuth trifluoride structured and crystallizes in the cubic Fm-3m space group. The structure is three-dimensional. there are two inequivalent Sr sites. In the first Sr site, Sr is bonded in a distorted body-centered cubic geometry to four equivalent Sr and four equivalent U atoms. All Sr–Sr bond lengths are 4.08 Å. All Sr–U bond lengths are 4.08 Å. In the second Sr site, Sr is bonded in a body-centered cubic geometry to eight equivalent Sr atoms. U is bonded in a body-centered cubic geometry to eight equivalent Sr atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on SrU by Materials Project

SrU crystallizes in the trigonal R3m space group. The structure is two-dimensional and consists of three SrU sheets oriented in the (0, 0, 1) direction. Sr is bonded in a 9-coordinate geometry to six equivalent Sr and three equivalent U atoms. All Sr–Sr bond lengths are 3.44 Å. All Sr–U bond lengths are 3.69 Å. U is bonded in a 9-coordinate geometry to three equivalent Sr and six equivalent U atoms. All U–U bond lengths are 3.44 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Sr3U by Materials Project

Sr3U is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. The structure is three-dimensional. Sr is bonded to eight equivalent Sr and four equivalent U atoms to form distorted SrSr8U4 cuboctahedra that share corners with twelve equivalent SrSr8U4 cuboctahedra, edges with eight equivalent USr12 cuboctahedra, edges with sixteen equivalent SrSr8U4 cuboctahedra, faces with four equivalent USr12 cuboctahedra, and faces with fourteen equivalent SrSr8U4 cuboctahedra. All Sr–Sr bond lengths are 3.97 Å. All Sr–U bond lengths are 3.97 Å. U is bonded to twelve equivalent Sr atoms to form USr12 cuboctahedra that share corners with twelve equivalent USr12 cuboctahedra, edges with twenty-four equivalent SrSr8U4 cuboctahedra, faces with six equivalent USr12 cuboctahedra, and faces with twelve equivalent SrSr8U4 cuboctahedra.

36 MATERIALS SCIENCE↗