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All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on LaGd3(BrO)4 by Materials Project

Gd3La(OBr)4 crystallizes in the orthorhombic Amm2 space group. The structure is two-dimensional and consists of two Gd3La(OBr)4 sheets oriented in the (0, 1, 0) direction. there are two inequivalent Gd3+ sites. In the first Gd3+ site, Gd3+ is bonded in a 4-coordinate geometry to four O2- and four equivalent Br1- atoms. There are two shorter (2.27 Å) and two longer (2.29 Å) Gd–O bond lengths. All Gd–Br bond lengths are 3.22 Å. In the second Gd3+ site, Gd3+ is bonded in a 4-coordinate geometry to four O2- and four Br1- atoms. There are one shorter (2.28 Å) and three longer (2.29 Å) Gd–O bond lengths. There are two shorter (3.23 Å) and two longer (3.26 Å) Gd–Br bond lengths. La3+ is bonded in a 4-coordinate geometry to four O2- and four equivalent Br1- atoms. There are two shorter (2.36 Å) and two longer (2.38 Å) La–O bond lengths. All La–Br bond lengths are 3.26 Å. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded to three Gd3+ and one La3+ atom to form OLaGd3 tetrahedra that share corners with four equivalent OLaGd3 tetrahedra and edges with four OGd4 tetrahedra. In the second O2- site, O2- is bonded to four Gd3+ atoms to form OGd4 tetrahedra that share corners with four OGd4 tetrahedra and edges with four equivalent OLaGd3 tetrahedra. In the third O2- site, O2- is bonded to two equivalent Gd3+ and two equivalent La3+ atoms to form OLa2Gd2 tetrahedra that share corners with four OGd4 tetrahedra and edges with four equivalent OLaGd3 tetrahedra. There are three inequivalent Br1- sites. In the first Br1- site, Br1- is bonded in a 4-coordinate geometry to four equivalent Gd3+ atoms. In the second Br1- site, Br1- is bonded in a 4-coordinate geometry to four equivalent Gd3+ atoms. In the third Br1- site, Br1- is bonded in a 4-coordinate geometry to two equivalent Gd3+ and two equivalent La3+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on La3Gd(BrO)4 by Materials Project

GdLa(OBr)2(LaOBr)2 crystallizes in the tetragonal P4mm space group. The structure is two-dimensional and consists of one GdLa(OBr)2 sheet oriented in the (0, 0, 1) direction and one LaOBr sheet oriented in the (0, 0, 1) direction. In the GdLa(OBr)2 sheet, Gd3+ is bonded in a 4-coordinate geometry to four equivalent O2- and four equivalent Br1- atoms. All Gd–O bond lengths are 2.33 Å. All Gd–Br bond lengths are 3.31 Å. La3+ is bonded in a 4-coordinate geometry to four equivalent O2- and four equivalent Br1- atoms. All La–O bond lengths are 2.39 Å. All La–Br bond lengths are 3.29 Å. O2- is bonded to two equivalent Gd3+ and two equivalent La3+ atoms to form a mixture of edge and corner-sharing OLa2Gd2 tetrahedra. There are two inequivalent Br1- sites. In the first Br1- site, Br1- is bonded in a 4-coordinate geometry to four equivalent La3+ atoms. In the second Br1- site, Br1- is bonded in a 4-coordinate geometry to four equivalent Gd3+ atoms. In the LaOBr sheet, there are two inequivalent La3+ sites. In the first La3+ site, La3+ is bonded in a 4-coordinate geometry to four equivalent O2- and four equivalent Br1- atoms. All La–O bond lengths are 2.39 Å. All La–Br bond lengths are 3.30 Å. In the second La3+ site, La3+ is bonded in a 4-coordinate geometry to four equivalent O2- and four equivalent Br1- atoms. All La–O bond lengths are 2.39 Å. All La–Br bond lengths are 3.29 Å. O2- is bonded to four La3+ atoms to form a mixture of edge and corner-sharing OLa4 tetrahedra. There are two inequivalent Br1- sites. In the first Br1- site, Br1- is bonded in a 4-coordinate geometry to four equivalent La3+ atoms. In the second Br1- site, Br1- is bonded in a 4-coordinate geometry to four equivalent La3+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on LaGd(BrO)2 by Materials Project

GdLa(OBr)2 crystallizes in the tetragonal P4mm space group. The structure is two-dimensional and consists of one GdLa(OBr)2 sheet oriented in the (0, 0, 1) direction. Gd3+ is bonded in a 4-coordinate geometry to four equivalent O2- and four equivalent Br1- atoms. All Gd–O bond lengths are 2.31 Å. All Gd–Br bond lengths are 3.29 Å. La3+ is bonded in a 4-coordinate geometry to four equivalent O2- and four equivalent Br1- atoms. All La–O bond lengths are 2.38 Å. All La–Br bond lengths are 3.27 Å. O2- is bonded to two equivalent Gd3+ and two equivalent La3+ atoms to form a mixture of edge and corner-sharing OLa2Gd2 tetrahedra. There are two inequivalent Br1- sites. In the first Br1- site, Br1- is bonded in a 4-coordinate geometry to four equivalent La3+ atoms. In the second Br1- site, Br1- is bonded in a 4-coordinate geometry to four equivalent Gd3+ atoms.

36 MATERIALS SCIENCE↗