Title: Materials Data on Sr5Ca3Fe2(CoO4)6 by Materials Project

Abstract

Sr5Ca3Fe2(CoO4)6 is (Cubic) Perovskite-derived structured and crystallizes in the monoclinic Pm space group. The structure is three-dimensional. there are five 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 CaO12 cuboctahedra, corners with eight SrO12 cuboctahedra, faces with two equivalent CaO12 cuboctahedra, faces with four SrO12 cuboctahedra, faces with two equivalent FeO6 octahedra, and faces with six CoO6 octahedra. There are a spread of Sr–O bond distances ranging from 2.71–2.79 Å. In the second Sr site, Sr is bonded to twelve O atoms to form SrO12 cuboctahedra that share corners with four equivalent SrO12 cuboctahedra, corners with eight CaO12 cuboctahedra, faces with two equivalent CaO12 cuboctahedra, faces with four SrO12 cuboctahedra, faces with two equivalent FeO6 octahedra, and faces with six CoO6 octahedra. There are a spread of Sr–O bond distances ranging from 2.71–2.78 Å. In the third Sr site, Sr is bonded to twelve O atoms to form SrO12 cuboctahedra that share corners with four equivalent SrO12 cuboctahedra, corners with eight CaO12 cuboctahedra, faces with six SrO12 cuboctahedra, faces with two equivalent FeO6 octahedra, and faces with six CoO6 octahedra. There are amore » spread of Sr–O bond distances ranging from 2.73–2.80 Å. In the fourth Sr site, Sr is bonded to twelve O atoms to form SrO12 cuboctahedra that share corners with four equivalent CaO12 cuboctahedra, corners with eight SrO12 cuboctahedra, faces with two equivalent CaO12 cuboctahedra, faces with four SrO12 cuboctahedra, faces with two equivalent FeO6 octahedra, and faces with six CoO6 octahedra. There are a spread of Sr–O bond distances ranging from 2.71–2.79 Å. In the fifth Sr site, Sr is bonded to twelve O atoms to form SrO12 cuboctahedra that share corners with four equivalent CaO12 cuboctahedra, corners with eight SrO12 cuboctahedra, faces with two equivalent SrO12 cuboctahedra, faces with four CaO12 cuboctahedra, faces with two equivalent FeO6 octahedra, and faces with six CoO6 octahedra. There are a spread of Sr–O bond distances ranging from 2.66–2.77 Å. There are three inequivalent Ca sites. In the first Ca site, Ca is bonded to twelve O atoms to form CaO12 cuboctahedra that share corners with four equivalent CaO12 cuboctahedra, corners with eight SrO12 cuboctahedra, faces with two equivalent CaO12 cuboctahedra, faces with four SrO12 cuboctahedra, faces with two equivalent FeO6 octahedra, and faces with six CoO6 octahedra. There are a spread of Ca–O bond distances ranging from 2.56–2.78 Å. In the second Ca site, Ca is bonded to twelve O atoms to form CaO12 cuboctahedra that share corners with twelve SrO12 cuboctahedra, faces with two equivalent SrO12 cuboctahedra, faces with four CaO12 cuboctahedra, faces with two equivalent FeO6 octahedra, and faces with six CoO6 octahedra. There are a spread of Ca–O bond distances ranging from 2.54–2.78 Å. In the third Ca site, Ca is bonded to twelve O atoms to form CaO12 cuboctahedra that share corners with four equivalent CaO12 cuboctahedra, corners with eight SrO12 cuboctahedra, faces with two equivalent CaO12 cuboctahedra, faces with four SrO12 cuboctahedra, faces with two equivalent FeO6 octahedra, and faces with six CoO6 octahedra. There are a spread of Ca–O bond distances ranging from 2.56–2.79 Å. Fe is bonded to six O atoms to form FeO6 octahedra that share corners with two equivalent FeO6 octahedra, corners with four CoO6 octahedra, faces with three CaO12 cuboctahedra, and faces with five SrO12 cuboctahedra. The corner-sharing octahedra tilt angles range from 0–2°. There are a spread of Fe–O bond distances ranging from 1.91–1.98 Å. There are three inequivalent Co sites. In the first Co site, Co is bonded to six O atoms to form CoO6 octahedra that share corners with two equivalent FeO6 octahedra, corners with four CoO6 octahedra, faces with three CaO12 cuboctahedra, and faces with five SrO12 cuboctahedra. The corner-sharing octahedra tilt angles range from 0–7°. There are a spread of Co–O bond distances ranging from 1.82–1.94 Å. In the second Co site, Co is bonded to six O atoms to form CoO6 octahedra that share corners with two equivalent FeO6 octahedra, corners with four CoO6 octahedra, faces with three CaO12 cuboctahedra, and faces with five SrO12 cuboctahedra. The corner-sharing octahedra tilt angles range from 0–2°. There are a spread of Co–O bond distances ranging from 1.88–2.05 Å. In the third Co site, Co is bonded to six O atoms to form CoO6 octahedra that share corners with six CoO6 octahedra, faces with three CaO12 cuboctahedra, and faces with five SrO12 cuboctahedra. The corner-sharing octahedra tilt angles range from 0–3°. There are a spread of Co–O bond distances ranging from 1.82–2.06 Å. There are sixteen inequivalent O sites. In the first O site, O is bonded in a distorted linear geometry to two Sr, two Ca, one Fe, and one Co atom. In the second O site, O is bonded to two Sr, two Ca, and two Co atoms to form distorted OSr2Ca2Co2 octahedra that share corners with ten OSr3CaFe2 octahedra, edges with two equivalent OSr2Ca2Co2 octahedra, and faces with six OSr3CaCo2 octahedra. The corner-sharing octahedra tilt angles range from 1–61°. In the third O site, O is bonded in a distorted linear geometry to three Sr, one Ca, one Fe, and one Co atom. In the fourth O site, O is bonded to three Sr, one Ca, and two Co atoms to form distorted OSr3CaCo2 octahedra that share corners with ten OSr3CaFe2 octahedra, edges with two equivalent OSr3CaCo2 octahedra, and faces with six OSr3CaCo2 octahedra. The corner-sharing octahedra tilt angles range from 1–63°. In the fifth O site, O is bonded to four Sr, one Fe, and one Co atom to form distorted OSr4FeCo octahedra that share corners with twelve OSr3CaCo2 octahedra, edges with four OSr4FeCo octahedra, and faces with six OSr3CaFe2 octahedra. The corner-sharing octahedra tilt angles range from 1–61°. In the sixth O site, O is bonded in a distorted linear geometry to one Sr, three Ca, one Fe, and one Co atom. In the seventh O site, O is bonded to four Sr and two Co atoms to form distorted OSr4Co2 octahedra that share corners with sixteen OSr3CaFe2 octahedra, edges with four OSr4FeCo octahedra, and faces with four OSr3CaCo2 octahedra. The corner-sharing octahedra tilt angles range from 1–62°. In the eighth O site, O is bonded in a distorted linear geometry to one Sr, three Ca, and two Co atoms. In the ninth O site, O is bonded to three Sr, one Ca, and two equivalent Fe atoms to form distorted OSr3CaFe2 octahedra that share corners with eighteen OSr2Ca2Fe2 octahedra, edges with two equivalent OSr3CaCo2 octahedra, and faces with two equivalent OSr4FeCo octahedra. The corner-sharing octahedra tilt angles range from 1–63°. In the tenth O site, O is bonded to two Sr, two Ca, and two equivalent Fe atoms to form distorted OSr2Ca2Fe2 octahedra that share corners with eighteen OSr3CaFe2 octahedra, edges with two equivalent OSr2Ca2Co2 octahedra, and faces with two equivalent OSr4FeCo octahedra. The corner-sharing octahedra tilt angles range from 1–61°. In the eleventh O site, O is bonded to three Sr, one Ca, and two equivalent Co atoms to form distorted OSr3CaCo2 octahedra that share corners with six OSr2Ca2Co2 octahedra, edges with four OSr3CaFe2 octahedra, and faces with six OSr4FeCo octahedra. The corner-sharing octahedra tilt angles range from 6–62°. In the twelfth O site, O is bonded to two Sr, two Ca, and two equivalent Co atoms to form distorted OSr2Ca2Co2 octahedra that share corners with six OSr3CaCo2 octahedra, edges with four OSr2Ca2Fe2 octahedra, and faces with six OSr4FeCo octahedra. The corner-sharing octahedra tilt angles range from 6–62°. In the thirteenth O site, O is bonded in a distorted linear geometry to three Sr, one Ca, and two equivalent Co atoms. In the fourteenth O site, O is bonded in a distorted linear geometry to two Sr, two Ca, and two equivalent Co atoms. In the fifteenth O site, O is bonded to three Sr, one Ca, and two equivalent Co atoms to form distorted OSr3CaCo2 octahedra that share corners with ten OSr3CaFe2 octahedra, edges with two equivalent OSr3CaCo2 octahedra, and faces with six OSr2Ca2Co2 octahedra. The corner-sharing octahedra tilt angles range from 1–60°. In the sixteenth O site, O is bonded to two Sr, two Ca, and two equivalent Co atoms to form distorted OSr2Ca2Co2 octahedra that share corners with ten OSr2Ca2Fe2 octahedra, edges with two equivalent OSr2Ca2Co2 octahedra, and faces with six OSr2Ca2Co2 octahedra. The corner-sharing octahedra tilt angles range from 1–60°.« less

Authors:

The Materials Project

Publication Date:

Sat May 02 00:00:00 EDT 2020

Other Number(s):

mp-1076260

DOE Contract Number:  

AC02-05CH11231; EDCBEE

Research Org.:

Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). LBNL Materials Project

Sponsoring Org.:

USDOE Office of Science (SC), Basic Energy Sciences (BES)

Collaborations:

MIT; UC Berkeley; Duke; U Louvain

Subject:

36 MATERIALS SCIENCE

Keywords:

crystal structure; Sr5Ca3Fe2(CoO4)6; Ca-Co-Fe-O-Sr

OSTI Identifier:

1475964

DOI:

https://doi.org/10.17188/1475964