Materials Data on Ba2HoCoCu2O7 by Materials Project
Ba2HoCoCu2O7 crystallizes in the orthorhombic Pmmm space group. The structure is three-dimensional. Ba2+ is bonded in a 10-coordinate geometry to ten O2- atoms. There are a spread of Ba–O bond distances ranging from 2.77–3.02 Å. Ho3+ is bonded in a body-centered cubic geometry to eight O2- atoms. There are four shorter (2.40 Å) and four longer (2.42 Å) Ho–O bond lengths. Co3+ is bonded in a square co-planar geometry to four O2- atoms. There is two shorter (1.81 Å) and two longer (1.96 Å) Co–O bond length. Cu2+ is bonded to five O2- atoms to form corner-sharing CuO5 square pyramids. There are a spread of Cu–O bond distances ranging from 1.94–2.44 Å. There are four inequivalent O2- sites. In the first O2- site, O2- is bonded in a 4-coordinate geometry to two equivalent Ba2+, two equivalent Ho3+, and two equivalent Cu2+ atoms. In the second O2- site, O2- is bonded to four equivalent Ba2+, one Co3+, and one Cu2+ atom to form a mixture of distorted edge and corner-sharing OBa4CoCu octahedra. The corner-sharing octahedra tilt angles range from 0–15°. In the third O2- site, O2- is bonded in a 4-coordinate geometry to two equivalent Ba2+, two equivalent Ho3+, and two equivalent Cu2+ atoms. In the fourth O2- site, O2- is bonded in a distorted linear geometry to four equivalent Ba2+ and two equivalent Co3+ atoms.
- Research Organization:
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). LBNL Materials Project
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- Contributing Organization:
- MIT; UC Berkeley; Duke; U Louvain
- DOE Contract Number:
- AC02-05CH11231; EDCBEE
- OSTI ID:
- 1750774
- Report Number(s):
- mp-1214661
- Resource Relation:
- Related Information: https://materialsproject.org/citing
- Country of Publication:
- United States
- Language:
- English
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