Materials Data on Sr4Fe2CoNiO12 by Materials Project
Sr4Fe2CoNiO12 is (Cubic) Perovskite-derived structured and crystallizes in the trigonal R3m space group. The structure is three-dimensional. there are four inequivalent Sr sites. In the first 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, a faceface with one NiO6 octahedra, faces with three equivalent CoO6 octahedra, and faces with four FeO6 octahedra. There are a spread of Sr–O bond distances ranging from 2.73–2.78 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, a faceface with one CoO6 octahedra, a faceface with one NiO6 octahedra, and faces with six FeO6 octahedra. There are nine shorter (2.76 Å) and three longer (2.77 Å) Sr–O bond lengths. In the third 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, faces with two FeO6 octahedra, faces with three equivalent CoO6 octahedra, and faces with three equivalent NiO6 octahedra. There are nine shorter (2.76 Å) and three longer (2.77 Å) Sr–O bond lengths. In the fourth 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, a faceface with one CoO6 octahedra, faces with three equivalent NiO6 octahedra, and faces with four FeO6 octahedra. There are nine shorter (2.76 Å) and three longer (2.79 Å) Sr–O bond lengths. There are two inequivalent Fe sites. In the first Fe site, Fe is bonded to six O atoms to form FeO6 octahedra that share corners with three equivalent FeO6 octahedra, corners with three equivalent NiO6 octahedra, and faces with eight SrO12 cuboctahedra. The corner-sharing octahedra tilt angles range from 0–1°. There is three shorter (1.91 Å) and three longer (1.96 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 three equivalent FeO6 octahedra, corners with three equivalent CoO6 octahedra, and faces with eight SrO12 cuboctahedra. The corner-sharing octahedral tilt angles are 1°. There is three shorter (1.96 Å) and three longer (1.99 Å) Fe–O bond length. Co is bonded to six O atoms to form CoO6 octahedra that share corners with three equivalent FeO6 octahedra, corners with three equivalent NiO6 octahedra, and faces with eight SrO12 cuboctahedra. The corner-sharing octahedra tilt angles range from 1–2°. There is three shorter (1.87 Å) and three longer (1.93 Å) Co–O bond length. Ni is bonded to six O atoms to form NiO6 octahedra that share corners with three equivalent FeO6 octahedra, corners with three equivalent CoO6 octahedra, and faces with eight SrO12 cuboctahedra. The corner-sharing octahedra tilt angles range from 0–2°. There are three shorter (1.98 Å) and three longer (2.03 Å) Ni–O bond lengths. There are four inequivalent O sites. In the first O site, O is bonded to four Sr and two Fe atoms to form distorted OSr4Fe2 octahedra that share corners with twenty-two OSr4Fe2 octahedra, edges with four OSr4FeNi octahedra, and faces with eight OSr4Fe2 octahedra. The corner-sharing octahedra tilt angles range from 0–61°. In the second O site, O is bonded to four Sr, one Fe, and one Ni atom to form a mixture of distorted corner, edge, and face-sharing OSr4FeNi octahedra. The corner-sharing octahedra tilt angles range from 1–61°. In the third O site, O is bonded to four Sr, one Fe, and one Co atom to form a mixture of distorted corner, edge, and face-sharing OSr4FeCo octahedra. The corner-sharing octahedra tilt angles range from 0–61°. In the fourth O site, O is bonded to four Sr, one Co, and one Ni atom to form distorted OSr4CoNi octahedra that share corners with twenty-two OSr4Fe2 octahedra, edges with four OSr4FeNi octahedra, and faces with eight OSr4FeNi octahedra. The corner-sharing octahedra tilt angles range from 1–61°.