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All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on CsGd(PO3)4 by Materials Project

CsGd(PO3)4 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. Cs1+ is bonded in a 12-coordinate geometry to nine O2- atoms. There are a spread of Cs–O bond distances ranging from 3.13–3.42 Å. Gd3+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Gd–O bond distances ranging from 2.34–2.48 Å. There are four inequivalent P5+ sites. In the first P5+ site, P5+ is bonded to four O2- atoms to form corner-sharing PO4 tetrahedra. There is two shorter (1.50 Å) and two longer (1.63 Å) P–O bond length. In the second P5+ site, P5+ is bonded to four O2- atoms to form corner-sharing PO4 tetrahedra. There are a spread of P–O bond distances ranging from 1.50–1.63 Å. In the third P5+ site, P5+ is bonded to four O2- atoms to form corner-sharing PO4 tetrahedra. There are a spread of P–O bond distances ranging from 1.50–1.63 Å. In the fourth P5+ site, P5+ is bonded to four O2- atoms to form corner-sharing PO4 tetrahedra. There are a spread of P–O bond distances ranging from 1.50–1.63 Å. There are twelve inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Gd3+ and one P5+ atom. In the second O2- site, O2- is bonded in a distorted bent 120 degrees geometry to two P5+ atoms. In the third O2- site, O2- is bonded in a distorted single-bond geometry to one Cs1+, one Gd3+, and one P5+ atom. In the fourth O2- site, O2- is bonded in a distorted single-bond geometry to one Cs1+, one Gd3+, and one P5+ atom. In the fifth O2- site, O2- is bonded in a 1-coordinate geometry to one Cs1+, one Gd3+, and one P5+ atom. In the sixth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Cs1+ and two P5+ atoms. In the seventh O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Cs1+ and two P5+ atoms. In the eighth O2- site, O2- is bonded in a distorted single-bond geometry to one Cs1+, one Gd3+, and one P5+ atom. In the ninth O2- site, O2- is bonded in a 1-coordinate geometry to one Cs1+, one Gd3+, and one P5+ atom. In the tenth O2- site, O2- is bonded in a distorted single-bond geometry to one Cs1+, one Gd3+, and one P5+ atom. In the eleventh O2- site, O2- is bonded in a distorted single-bond geometry to one Cs1+, one Gd3+, and one P5+ atom. In the twelfth O2- site, O2- is bonded in a bent 120 degrees geometry to two P5+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Cs3Gd(PO4)2 by Materials Project

Cs3Gd(PO4)2 crystallizes in the monoclinic P2_1 space group. The structure is three-dimensional. there are six inequivalent Cs1+ sites. In the first Cs1+ site, Cs1+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Cs–O bond distances ranging from 2.98–3.62 Å. In the second Cs1+ site, Cs1+ is bonded in a 8-coordinate geometry to ten O2- atoms. There are a spread of Cs–O bond distances ranging from 3.05–3.70 Å. In the third Cs1+ site, Cs1+ is bonded in a 2-coordinate geometry to eight O2- atoms. There are a spread of Cs–O bond distances ranging from 2.97–3.51 Å. In the fourth Cs1+ site, Cs1+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Cs–O bond distances ranging from 2.96–3.55 Å. In the fifth Cs1+ site, Cs1+ is bonded in a 4-coordinate geometry to nine O2- atoms. There are a spread of Cs–O bond distances ranging from 3.04–3.54 Å. In the sixth Cs1+ site, Cs1+ is bonded to eight O2- atoms to form CsO8 hexagonal bipyramids that share corners with two PO4 tetrahedra, an edgeedge with one GdO6 octahedra, edges with three PO4 tetrahedra, and a faceface with one GdO6 octahedra. There are a spread of Cs–O bond distances ranging from 3.02–3.47 Å. There are two inequivalent Gd3+ sites. In the first Gd3+ site, Gd3+ is bonded to six O2- atoms to form GdO6 octahedra that share corners with four PO4 tetrahedra, an edgeedge with one CsO8 hexagonal bipyramid, and an edgeedge with one PO4 tetrahedra. There are a spread of Gd–O bond distances ranging from 2.25–2.44 Å. In the second Gd3+ site, Gd3+ is bonded to six O2- atoms to form GdO6 octahedra that share corners with four PO4 tetrahedra, an edgeedge with one PO4 tetrahedra, and a faceface with one CsO8 hexagonal bipyramid. There are a spread of Gd–O bond distances ranging from 2.25–2.44 Å. There are four inequivalent P5+ sites. In the first P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share a cornercorner with one CsO8 hexagonal bipyramid, a cornercorner with one GdO6 octahedra, an edgeedge with one CsO8 hexagonal bipyramid, and an edgeedge with one GdO6 octahedra. The corner-sharing octahedral tilt angles are 16°. There are a spread of P–O bond distances ranging from 1.54–1.58 Å. In the second P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with three GdO6 octahedra and an edgeedge with one CsO8 hexagonal bipyramid. The corner-sharing octahedra tilt angles range from 10–24°. There are a spread of P–O bond distances ranging from 1.54–1.57 Å. In the third P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share a cornercorner with one CsO8 hexagonal bipyramid, a cornercorner with one GdO6 octahedra, an edgeedge with one CsO8 hexagonal bipyramid, and an edgeedge with one GdO6 octahedra. The corner-sharing octahedral tilt angles are 21°. There are a spread of P–O bond distances ranging from 1.53–1.58 Å. In the fourth P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with three GdO6 octahedra. The corner-sharing octahedra tilt angles range from 4–27°. There are a spread of P–O bond distances ranging from 1.53–1.57 Å. There are sixteen inequivalent O2- sites. In the first O2- site, O2- is bonded in a 2-coordinate geometry to two Cs1+, one Gd3+, and one P5+ atom. In the second O2- site, O2- is bonded in a 1-coordinate geometry to four Cs1+, one Gd3+, and one P5+ atom. In the third O2- site, O2- is bonded in a distorted single-bond geometry to five Cs1+ and one P5+ atom. In the fourth O2- site, O2- is bonded in a 1-coordinate geometry to three Cs1+, one Gd3+, and one P5+ atom. In the fifth O2- site, O2- is bonded in a distorted single-bond geometry to four Cs1+ and one P5+ atom. In the sixth O2- site, O2- is bonded in a 1-coordinate geometry to three Cs1+, one Gd3+, and one P5+ atom. In the seventh O2- site, O2- is bonded in a distorted bent 150 degrees geometry to two Cs1+, one Gd3+, and one P5+ atom. In the eighth O2- site, O2- is bonded in a distorted single-bond geometry to four Cs1+ and one P5+ atom. In the ninth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to three Cs1+, one Gd3+, and one P5+ atom. In the tenth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to two Cs1+, one Gd3+, and one P5+ atom. In the eleventh O2- site, O2- is bonded in a distorted linear geometry to two Cs1+, one Gd3+, and one P5+ atom. In the twelfth O2- site, O2- is bonded in a 2-coordinate geometry to three Cs1+, one Gd3+, and one P5+ atom. In the thirteenth O2- site, O2- is bonded in a distorted linear geometry to three Cs1+, one Gd3+, and one P5+ atom. In the fourteenth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to three Cs1+, one Gd3+, and one P5+ atom. In the fifteenth O2- site, O2- is bonded in a distorted single-bond geometry to five Cs1+ and one P5+ atom. In the sixteenth O2- site, O2- is bonded in a 1-coordinate geometry to three Cs1+, one Gd3+, and one P5+ atom.

36 MATERIALS SCIENCE↗