Search NASA⌕ Search

SEARCH · Search NASA

Results for “Sr2YCoCu2O7”

Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.

Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.

3 records
All sourcesNASA NTRSDOE OSTI
DOE OSTI2019

Materials Data on Sr2YCoCu2O7 by Materials Project

Sr2YCoCu2O7 crystallizes in the triclinic P-1 space group. The structure is three-dimensional. there are two inequivalent Sr2+ sites. In the first Sr2+ site, Sr2+ is bonded in a 9-coordinate geometry to nine O2- atoms. There are a spread of Sr–O bond distances ranging from 2.39–3.02 Å. In the second Sr2+ site, Sr2+ is bonded in a 9-coordinate geometry to nine O2- atoms. There are a spread of Sr–O bond distances ranging from 2.39–3.02 Å. There are two inequivalent Y3+ sites. In the first Y3+ site, Y3+ is bonded in a body-centered cubic geometry to eight O2- atoms. There are a spread of Y–O bond distances ranging from 2.40–2.44 Å. In the second Y3+ site, Y3+ is bonded in a body-centered cubic geometry to eight O2- atoms. There are a spread of Y–O bond distances ranging from 2.40–2.45 Å. Co3+ is bonded to four O2- atoms to form distorted CoO4 trigonal pyramids that share corners with two CuO5 square pyramids and an edgeedge with one CoO4 trigonal pyramid. There are a spread of Co–O bond distances ranging from 1.83–1.97 Å. There are two inequivalent Cu2+ sites. In the first Cu2+ site, Cu2+ is bonded to five O2- atoms to form CuO5 square pyramids that share corners with four equivalent CuO5 square pyramids and a cornercorner with one CoO4 trigonal pyramid. There are a spread of Cu–O bond distances ranging from 1.93–2.40 Å. In the second Cu2+ site, Cu2+ is bonded to five O2- atoms to form CuO5 square pyramids that share corners with four equivalent CuO5 square pyramids and a cornercorner with one CoO4 trigonal pyramid. There are a spread of Cu–O bond distances ranging from 1.94–2.38 Å. There are seven inequivalent O2- sites. In the first O2- site, O2- is bonded in a 6-coordinate geometry to two Sr2+, two Y3+, and two Cu2+ atoms. In the second O2- site, O2- is bonded in a 6-coordinate geometry to two Sr2+, two Y3+, and two Cu2+ atoms. In the third O2- site, O2- is bonded to two Sr2+ and two equivalent Co3+ atoms to form edge-sharing OSr2Co2 trigonal pyramids. In the fourth O2- site, O2- is bonded in a 1-coordinate geometry to four Sr2+, one Co3+, and one Cu2+ atom. In the fifth O2- site, O2- is bonded in a 1-coordinate geometry to four Sr2+, one Co3+, and one Cu2+ atom. In the sixth O2- site, O2- is bonded in a 6-coordinate geometry to two Sr2+, two Y3+, and two Cu2+ atoms. In the seventh O2- site, O2- is bonded in a 6-coordinate geometry to two Sr2+, two Y3+, and two Cu2+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2019

Materials Data on Sr2YCoCu2O7 by Materials Project

Sr2YCoCu2O7 crystallizes in the triclinic P1 space group. The structure is three-dimensional. there are four inequivalent Sr2+ sites. In the first Sr2+ site, Sr2+ is bonded in a 9-coordinate geometry to nine O2- atoms. There are a spread of Sr–O bond distances ranging from 2.44–3.11 Å. In the second Sr2+ site, Sr2+ is bonded in a 9-coordinate geometry to nine O2- atoms. There are a spread of Sr–O bond distances ranging from 2.43–3.07 Å. In the third Sr2+ site, Sr2+ is bonded in a 9-coordinate geometry to nine O2- atoms. There are a spread of Sr–O bond distances ranging from 2.43–3.08 Å. In the fourth Sr2+ site, Sr2+ is bonded in a 9-coordinate geometry to nine O2- atoms. There are a spread of Sr–O bond distances ranging from 2.44–3.11 Å. There are two inequivalent Y3+ sites. In the first Y3+ site, Y3+ is bonded in a body-centered cubic geometry to eight O2- atoms. There are a spread of Y–O bond distances ranging from 2.35–2.50 Å. In the second Y3+ site, Y3+ is bonded in a body-centered cubic geometry to eight O2- atoms. There are a spread of Y–O bond distances ranging from 2.37–2.48 Å. There are two inequivalent Co3+ sites. In the first Co3+ site, Co3+ is bonded to four O2- atoms to form CoO4 tetrahedra that share corners with two CuO5 square pyramids and corners with two equivalent CoO4 tetrahedra. There are a spread of Co–O bond distances ranging from 1.82–1.96 Å. In the second Co3+ site, Co3+ is bonded to four O2- atoms to form CoO4 tetrahedra that share corners with two CuO5 square pyramids and corners with two equivalent CoO4 tetrahedra. There are a spread of Co–O bond distances ranging from 1.82–1.96 Å. There are four inequivalent Cu2+ sites. In the first Cu2+ site, Cu2+ is bonded to five O2- atoms to form CuO5 square pyramids that share corners with four equivalent CuO5 square pyramids and a cornercorner with one CoO4 tetrahedra. There are a spread of Cu–O bond distances ranging from 1.94–2.40 Å. In the second Cu2+ site, Cu2+ is bonded to five O2- atoms to form CuO5 square pyramids that share corners with four equivalent CuO5 square pyramids and a cornercorner with one CoO4 tetrahedra. There are a spread of Cu–O bond distances ranging from 1.96–2.31 Å. In the third Cu2+ site, Cu2+ is bonded to five O2- atoms to form CuO5 square pyramids that share corners with four equivalent CuO5 square pyramids and a cornercorner with one CoO4 tetrahedra. There are a spread of Cu–O bond distances ranging from 1.94–2.33 Å. In the fourth Cu2+ site, Cu2+ is bonded to five O2- atoms to form CuO5 square pyramids that share corners with four equivalent CuO5 square pyramids and a cornercorner with one CoO4 tetrahedra. There are a spread of Cu–O bond distances ranging from 1.93–2.41 Å. There are fourteen inequivalent O2- sites. In the first O2- site, O2- is bonded in a 6-coordinate geometry to two Sr2+, two Y3+, and two Cu2+ atoms. In the second O2- site, O2- is bonded in a 6-coordinate geometry to two Sr2+, two Y3+, and two Cu2+ atoms. In the third O2- site, O2- is bonded in a 1-coordinate geometry to four Sr2+, one Co3+, and one Cu2+ atom. In the fourth O2- site, O2- is bonded in a 1-coordinate geometry to four Sr2+, one Co3+, and one Cu2+ atom. In the fifth O2- site, O2- is bonded to two Sr2+ and two Co3+ atoms to form distorted corner-sharing OSr2Co2 tetrahedra. In the sixth O2- site, O2- is bonded in a 6-coordinate geometry to two Sr2+, two Y3+, and two Cu2+ atoms. In the seventh O2- site, O2- is bonded in a 6-coordinate geometry to two Sr2+, two Y3+, and two Cu2+ atoms. In the eighth O2- site, O2- is bonded in a 6-coordinate geometry to two Sr2+, two Y3+, and two Cu2+ atoms. In the ninth O2- site, O2- is bonded in a 6-coordinate geometry to two Sr2+, two Y3+, and two Cu2+ atoms. In the tenth O2- site, O2- is bonded in a 1-coordinate geometry to four Sr2+, one Co3+, and one Cu2+ atom. In the eleventh O2- site, O2- is bonded in a 1-coordinate geometry to four Sr2+, one Co3+, and one Cu2+ atom. In the twelfth O2- site, O2- is bonded to two Sr2+ and two Co3+ atoms to form distorted corner-sharing OSr2Co2 tetrahedra. In the thirteenth O2- site, O2- is bonded in a 6-coordinate geometry to two Sr2+, two Y3+, and two Cu2+ atoms. In the fourteenth O2- site, O2- is bonded in a 6-coordinate geometry to two Sr2+, two Y3+, and two Cu2+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Sr2YCoCu2O7 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↗