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All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on BaSr4(FeO2)5 by Materials Project

BaSr4(FeO2)5 crystallizes in the tetragonal P4/mmm space group. The structure is three-dimensional. Ba2+ is bonded in a body-centered cubic geometry to eight equivalent O2- atoms. All Ba–O bond lengths are 2.82 Å. There are two inequivalent Sr2+ sites. In the first Sr2+ site, Sr2+ is bonded in a body-centered cubic geometry to eight O2- atoms. There are four shorter (2.65 Å) and four longer (2.69 Å) Sr–O bond lengths. In the second Sr2+ site, Sr2+ is bonded in a body-centered cubic geometry to eight O2- atoms. There are four shorter (2.68 Å) and four longer (2.69 Å) Sr–O bond lengths. There are three inequivalent Fe2+ sites. In the first Fe2+ site, Fe2+ is bonded in a rectangular see-saw-like geometry to four equivalent O2- atoms. All Fe–O bond lengths are 2.04 Å. In the second Fe2+ site, Fe2+ is bonded in a rectangular see-saw-like geometry to four equivalent O2- atoms. All Fe–O bond lengths are 2.04 Å. In the third Fe2+ site, Fe2+ is bonded in a square co-planar geometry to four equivalent O2- atoms. All Fe–O bond lengths are 2.04 Å. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded to two equivalent Ba2+, two equivalent Sr2+, and two equivalent Fe2+ atoms to form a mixture of distorted edge, corner, and face-sharing OBa2Sr2Fe2 octahedra. The corner-sharing octahedra tilt angles range from 0–65°. In the second O2- site, O2- is bonded to four Sr2+ and two equivalent Fe2+ atoms to form OSr4Fe2 octahedra that share corners with fourteen OBa2Sr2Fe2 octahedra, edges with four OBa2Sr2Fe2 octahedra, and faces with four equivalent OSr4Fe2 octahedra. The corner-sharing octahedra tilt angles range from 0–65°. In the third O2- site, O2- is bonded to four equivalent Sr2+ and two equivalent Fe2+ atoms to form a mixture of edge, corner, and face-sharing OSr4Fe2 octahedra. The corner-sharing octahedra tilt angles range from 0–65°.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on BaSr4(FeO2)5 by Materials Project

BaSr4(FeO2)5 crystallizes in the monoclinic P2/m space group. The structure is three-dimensional. Ba2+ is bonded in a body-centered cubic geometry to eight O2- atoms. There are a spread of Ba–O bond distances ranging from 2.72–2.82 Å. There are two inequivalent Sr2+ sites. In the first Sr2+ site, Sr2+ is bonded in a body-centered cubic geometry to eight O2- atoms. There are a spread of Sr–O bond distances ranging from 2.64–2.76 Å. In the second Sr2+ site, Sr2+ is bonded in a body-centered cubic geometry to eight O2- atoms. There are a spread of Sr–O bond distances ranging from 2.64–2.73 Å. There are three inequivalent Fe2+ sites. In the first Fe2+ site, Fe2+ is bonded in a square co-planar geometry to four O2- atoms. There are a spread of Fe–O bond distances ranging from 2.04–2.07 Å. In the second Fe2+ site, Fe2+ is bonded in a rectangular see-saw-like geometry to four O2- atoms. All Fe–O bond lengths are 2.04 Å. In the third Fe2+ site, Fe2+ is bonded in a square co-planar geometry to four O2- atoms. There are two shorter (2.04 Å) and two longer (2.07 Å) Fe–O bond lengths. There are six inequivalent O2- sites. In the first O2- site, O2- is bonded to two equivalent Ba2+, two equivalent Sr2+, and two Fe2+ atoms to form a mixture of distorted corner, edge, and face-sharing OBa2Sr2Fe2 octahedra. The corner-sharing octahedra tilt angles range from 0–66°. In the second O2- site, O2- is bonded to four equivalent Sr2+ and two equivalent Fe2+ atoms to form a mixture of corner, edge, and face-sharing OSr4Fe2 octahedra. The corner-sharing octahedra tilt angles range from 0–65°. In the third O2- site, O2- is bonded to four Sr2+ and two Fe2+ atoms to form distorted OSr4Fe2 octahedra that share corners with fourteen OBa2Sr2Fe2 octahedra, edges with four OBa2Sr2Fe2 octahedra, and faces with four OSr4Fe2 octahedra. The corner-sharing octahedra tilt angles range from 0–65°. In the fourth O2- site, O2- is bonded to one Ba2+, three Sr2+, and two equivalent Fe2+ atoms to form distorted OBaSr3Fe2 octahedra that share corners with fourteen OBa2Sr2Fe2 octahedra, edges with four OSr4Fe2 octahedra, and faces with four OBa2Sr2Fe2 octahedra. The corner-sharing octahedra tilt angles range from 0–65°. In the fifth O2- site, O2- is bonded to four Sr2+ and two equivalent Fe2+ atoms to form distorted OSr4Fe2 octahedra that share corners with fourteen OBa2Sr2Fe2 octahedra, edges with four OSr4Fe2 octahedra, and faces with four OSr4Fe2 octahedra. The corner-sharing octahedra tilt angles range from 0–66°. In the sixth O2- site, O2- is bonded to two equivalent Ba2+, two equivalent Sr2+, and two equivalent Fe2+ atoms to form distorted OBa2Sr2Fe2 octahedra that share corners with fourteen OSr4Fe2 octahedra, edges with four equivalent OBaSr3Fe2 octahedra, and faces with four equivalent OBa2Sr2Fe2 octahedra. The corner-sharing octahedra tilt angles range from 0–65°.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on BaSr4 by Materials Project

BaSr4 is alpha La-derived structured and crystallizes in the trigonal R-3m space group. The structure is three-dimensional. Ba is bonded to six equivalent Ba and six equivalent Sr atoms to form BaBa6Sr6 cuboctahedra that share corners with six equivalent BaBa6Sr6 cuboctahedra, corners with six SrSr12 cuboctahedra, edges with six equivalent BaBa6Sr6 cuboctahedra, edges with eighteen SrBa3Sr9 cuboctahedra, faces with six equivalent BaBa6Sr6 cuboctahedra, and faces with twelve equivalent SrBa3Sr9 cuboctahedra. All Ba–Ba bond lengths are 4.30 Å. All Ba–Sr bond lengths are 4.35 Å. There are five inequivalent Sr sites. In the first Sr site, Sr is bonded to three equivalent Ba and nine Sr atoms to form SrBa3Sr9 cuboctahedra that share corners with twelve SrBa3Sr9 cuboctahedra, edges with six equivalent BaBa6Sr6 cuboctahedra, edges with eighteen SrBa3Sr9 cuboctahedra, faces with six equivalent BaBa6Sr6 cuboctahedra, and faces with twelve SrBa3Sr9 cuboctahedra. There are three shorter (4.28 Å) and six longer (4.30 Å) Sr–Sr bond lengths. In the second Sr site, Sr is bonded to twelve Sr atoms to form SrSr12 cuboctahedra that share corners with three equivalent BaBa6Sr6 cuboctahedra, corners with nine SrBa3Sr9 cuboctahedra, edges with three equivalent BaBa6Sr6 cuboctahedra, edges with twenty-one SrBa3Sr9 cuboctahedra, and faces with eighteen SrBa3Sr9 cuboctahedra. All Sr–Sr bond lengths are 4.30 Å. In the third Sr site, Sr is bonded to twelve Sr atoms to form SrSr12 cuboctahedra that share corners with three equivalent BaBa6Sr6 cuboctahedra, corners with nine SrBa3Sr9 cuboctahedra, edges with three equivalent BaBa6Sr6 cuboctahedra, edges with twenty-one SrBa3Sr9 cuboctahedra, and faces with eighteen SrBa3Sr9 cuboctahedra. There are three shorter (4.28 Å) and six longer (4.30 Å) Sr–Sr bond lengths. In the fourth Sr site, Sr is bonded to twelve Sr atoms to form SrSr12 cuboctahedra that share corners with three equivalent BaBa6Sr6 cuboctahedra, corners with nine SrSr12 cuboctahedra, edges with three equivalent BaBa6Sr6 cuboctahedra, edges with twenty-one SrSr12 cuboctahedra, and faces with eighteen SrSr12 cuboctahedra. There are three shorter (4.28 Å) and nine longer (4.30 Å) Sr–Sr bond lengths. In the fifth Sr site, Sr is bonded to twelve Sr atoms to form SrSr12 cuboctahedra that share corners with three equivalent BaBa6Sr6 cuboctahedra, corners with nine SrBa3Sr9 cuboctahedra, edges with three equivalent BaBa6Sr6 cuboctahedra, edges with twenty-one SrBa3Sr9 cuboctahedra, and faces with eighteen SrBa3Sr9 cuboctahedra. There are three shorter (4.28 Å) and nine longer (4.30 Å) Sr–Sr bond lengths.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on BaSr4(FeO3)5 by Materials Project

BaSr4(FeO3)5 is (Cubic) Perovskite-derived structured and crystallizes in the tetragonal P4/mmm space group. The structure is three-dimensional. Ba is bonded to twelve O atoms to form BaO12 cuboctahedra that share corners with four equivalent BaO12 cuboctahedra, corners with eight equivalent SrO12 cuboctahedra, faces with two equivalent SrO12 cuboctahedra, faces with four equivalent BaO12 cuboctahedra, and faces with eight equivalent FeO6 octahedra. There are four shorter (2.78 Å) and eight longer (2.85 Å) Ba–O bond lengths. There are two inequivalent Sr sites. In the first Sr site, Sr is bonded to twelve O atoms to form SrO12 cuboctahedra that share corners with four equivalent BaO12 cuboctahedra, corners with eight SrO12 cuboctahedra, a faceface with one BaO12 cuboctahedra, faces with five SrO12 cuboctahedra, and faces with eight FeO6 octahedra. There are a spread of Sr–O bond distances ranging from 2.72–2.78 Å. In the second Sr site, Sr is bonded to twelve O atoms to form SrO12 cuboctahedra that share corners with twelve SrO12 cuboctahedra, faces with six SrO12 cuboctahedra, and faces with eight FeO6 octahedra. There are eight shorter (2.77 Å) and four longer (2.78 Å) Sr–O bond lengths. There are three inequivalent Fe sites. In the first Fe site, Fe is bonded to six O atoms to form FeO6 octahedra that share corners with six FeO6 octahedra, faces with four equivalent BaO12 cuboctahedra, and faces with four equivalent SrO12 cuboctahedra. The corner-sharing octahedra tilt angles range from 0–3°. There are a spread of Fe–O bond distances ranging from 1.95–2.00 Å. In the second Fe site, Fe is bonded to six O atoms to form FeO6 octahedra that share corners with six FeO6 octahedra and faces with eight SrO12 cuboctahedra. The corner-sharing octahedral tilt angles are 0°. There are a spread of Fe–O bond distances ranging from 1.93–1.97 Å. In the third Fe site, Fe is bonded to six O atoms to form FeO6 octahedra that share corners with six FeO6 octahedra and faces with eight equivalent SrO12 cuboctahedra. The corner-sharing octahedral tilt angles are 0°. There is two shorter (1.96 Å) and four longer (1.97 Å) Fe–O bond length. There are six inequivalent O sites. In the first O site, O is bonded to four equivalent Ba and two equivalent Fe atoms to form distorted OBa4Fe2 octahedra that share corners with twenty OBa4Fe2 octahedra, edges with four equivalent OBa4Fe2 octahedra, and faces with eight equivalent OBa2Sr2Fe2 octahedra. The corner-sharing octahedra tilt angles range from 0–61°. In the second O site, O is bonded in a distorted linear geometry to four equivalent Sr and two Fe atoms. In the third O site, O is bonded in a distorted linear geometry to four equivalent Sr and two Fe atoms. In the fourth O site, O is bonded to two equivalent Ba, two equivalent Sr, and two equivalent Fe atoms to form distorted OBa2Sr2Fe2 octahedra that share corners with eighteen OSr4Fe2 octahedra, edges with four OSr4Fe2 octahedra, and faces with six OBa4Fe2 octahedra. The corner-sharing octahedra tilt angles range from 0–61°. In the fifth O site, O is bonded to four Sr and two equivalent Fe atoms to form distorted OSr4Fe2 octahedra that share corners with fourteen OBa2Sr2Fe2 octahedra, edges with four OSr4Fe2 octahedra, and faces with four equivalent OSr4Fe2 octahedra. The corner-sharing octahedra tilt angles range from 0–61°. In the sixth O site, O is bonded to four equivalent Sr and two equivalent Fe atoms to form a mixture of distorted edge, face, and corner-sharing OSr4Fe2 octahedra. The corner-sharing octahedra tilt angles range from 0–60°.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on BaSr4(FeO3)5 by Materials Project

BaSr4(FeO3)5 is (Cubic) Perovskite-derived structured and crystallizes in the orthorhombic Cmmm space group. The structure is three-dimensional. Ba is bonded to twelve O atoms to form BaO12 cuboctahedra that share corners with two equivalent BaO12 cuboctahedra, corners with ten SrO12 cuboctahedra, faces with two equivalent BaO12 cuboctahedra, faces with four equivalent SrO12 cuboctahedra, and faces with eight FeO6 octahedra. There are a spread of Ba–O bond distances ranging from 2.79–2.84 Å. There are three inequivalent Sr sites. In the first Sr site, Sr is bonded to twelve O atoms to form SrO12 cuboctahedra that share corners with four equivalent BaO12 cuboctahedra, corners with eight SrO12 cuboctahedra, faces with two equivalent BaO12 cuboctahedra, faces with four SrO12 cuboctahedra, and faces with eight FeO6 octahedra. There are a spread of Sr–O bond distances ranging from 2.76–2.80 Å. In the second Sr site, Sr is bonded to twelve O atoms to form SrO12 cuboctahedra that share a cornercorner with one BaO12 cuboctahedra, corners with eleven SrO12 cuboctahedra, faces with six SrO12 cuboctahedra, and faces with eight FeO6 octahedra. There are a spread of Sr–O bond distances ranging from 2.74–2.79 Å. In the third Sr site, Sr is bonded to twelve O atoms to form SrO12 cuboctahedra that share a cornercorner with one BaO12 cuboctahedra, corners with eleven SrO12 cuboctahedra, faces with six SrO12 cuboctahedra, and faces with eight FeO6 octahedra. There are a spread of Sr–O bond distances ranging from 2.74–2.79 Å. There are three inequivalent Fe sites. In the first Fe site, Fe is bonded to six O atoms to form FeO6 octahedra that share corners with six FeO6 octahedra, faces with two equivalent BaO12 cuboctahedra, and faces with six SrO12 cuboctahedra. The corner-sharing octahedra tilt angles range from 0–3°. There is four shorter (1.97 Å) and two longer (1.98 Å) Fe–O bond length. In the second Fe site, Fe is bonded to six O atoms to form FeO6 octahedra that share corners with six FeO6 octahedra and faces with eight SrO12 cuboctahedra. The corner-sharing octahedral tilt angles are 0°. There is two shorter (1.96 Å) and four longer (1.97 Å) Fe–O bond length. In the third Fe site, Fe is bonded to six O atoms to form FeO6 octahedra that share corners with six FeO6 octahedra, faces with four equivalent BaO12 cuboctahedra, and faces with four equivalent SrO12 cuboctahedra. The corner-sharing octahedra tilt angles range from 0–3°. There is two shorter (1.97 Å) and four longer (1.99 Å) Fe–O bond length. There are seven inequivalent O sites. In the first O site, O is bonded to two equivalent Ba, two equivalent Sr, and two equivalent Fe atoms to form distorted OBa2Sr2Fe2 octahedra that share corners with twenty-two OBa2Sr2Fe2 octahedra, edges with four OBaSr3Fe2 octahedra, and faces with eight equivalent OBa2Sr2Fe2 octahedra. The corner-sharing octahedra tilt angles range from 0–60°. In the second O site, O is bonded to one Ba, three Sr, and two equivalent Fe atoms to form distorted OBaSr3Fe2 octahedra that share corners with twenty-two OBaSr3Fe2 octahedra, edges with four OBa2Sr2Fe2 octahedra, and faces with eight OBa2Sr2Fe2 octahedra. The corner-sharing octahedra tilt angles range from 0–60°. There are one shorter (2.74 Å) and two longer (2.79 Å) O–Sr bond lengths. Both O–Fe bond lengths are 1.97 Å. In the third O site, O is bonded to two equivalent Ba, two equivalent Sr, and two Fe atoms to form a mixture of distorted face, edge, and corner-sharing OBa2Sr2Fe2 octahedra. The corner-sharing octahedra tilt angles range from 0–61°. In the fourth O site, O is bonded to four Sr and two equivalent Fe atoms to form a mixture of distorted face, edge, and corner-sharing OSr4Fe2 octahedra. The corner-sharing octahedra tilt angles range from 0–60°. In the fifth O site, O is bonded to four Sr and two Fe atoms to form a mixture of distorted face, edge, and corner-sharing OSr4Fe2 octahedra. The corner-sharing octahedra tilt angles range from 0–60°. In the sixth O site, O is bonded to one Ba, three Sr, and two equivalent Fe atoms to form a mixture of distorted face, edge, and corner-sharing OBaSr3Fe2 octahedra. The corner-sharing octahedra tilt angles range from 0–60°. In the seventh O site, O is bonded to four Sr and two equivalent Fe atoms to form distorted OSr4Fe2 octahedra that share corners with twenty-two OBa2Sr2Fe2 octahedra, edges with four OBaSr3Fe2 octahedra, and faces with eight OSr4Fe2 octahedra. The corner-sharing octahedra tilt angles range from 0–60°.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on BaSr4(FeO3)5 by Materials Project

Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on BaSr4(FeO3)5 by Materials Project

Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

36 MATERIALS SCIENCE↗