Ba4Co2O8
This complex oxide is a barium cobaltate material characterized by its specific crystalline arrangement of cobalt-oxygen chains. It is primarily utilized in solid-state chemistry research for investigating magnetic properties and electronic behavior in transition metal oxides.
Key Properties
Cross-validated computational properties for Ba4Co2O8, aggregated across 4 databases.
Band GapEnergy needed to move an electron from the valence band to the conduction band. Lower or zero values tend to behave more metallic; larger gaps are more insulating or semiconducting.
Energy Above HullThermodynamic distance from the most stable set of competing phases. 0 eV/atom is on the convex hull; small positive values may still be experimentally accessible.
StabilityA plain-language summary of the best reported energy-above-hull result. It reflects whether the lowest-energy structure is on, near, or far from the stability hull.
StructuresCount of reported calculated crystal structures for this formula, including alternate polymorphs, source databases, and observed space groups.
Reported Structures
Lowest-energy structures reported for Ba4Co2O8, ranked by energy above hull.
| Space GroupSymmetry classification of the crystal arrangement. The number is the international space-group index. | Crystal SystemBroad lattice family, such as cubic, tetragonal, monoclinic, or triclinic, derived from unit-cell symmetry. | Band Gap (eV)Electronic gap calculated for this specific reported structure, measured in electronvolts. | E above hull (eV/atom)Thermodynamic distance from the convex hull for this structure, normalized per atom. Lower is generally more stable. | E/atom (eV)Computed total energy normalized per atom. Use energy above hull, not this value alone, when comparing stability. | Density (g/cm³)Mass per relaxed crystal volume, reported in grams per cubic centimeter. |
|---|---|---|---|---|---|
| P21/c (No. 14) | monoclinic | 0.32 | 0.0000 | -6.724 | 5.51 |
| Pnma (No. 62) | orthorhombic | 0.04 | 0.0019 | -6.722 | 5.56 |
| — | — | — | — | — | 4.67 |
| Fd-3m (No. 227) | — | — | — | — | — |
| — | — | — | — | — | 4.67 |
| P21/c (No. 14) | monoclinic | — | — | — | 1.42 |
| — | — | — | — | — | 3.91 |
Applications
Where Ba4Co2O8 is used.
Frequently Asked Questions
Common questions about Ba4Co2O8, answered from cross-validated data.
What is Ba4Co2O8?
This complex oxide is a barium cobaltate material characterized by its specific crystalline arrangement of cobalt-oxygen chains. It is primarily utilized in solid-state chemistry research for investigating magnetic properties and electronic behavior in transition metal oxides.
What is Ba4Co2O8 used for?
What is the band gap of Ba4Co2O8?
Is Ba4Co2O8 a metal, semiconductor, or insulator?
Is Ba4Co2O8 thermodynamically stable?
What is the crystal structure of Ba4Co2O8?
What is the density of Ba4Co2O8?
How many polymorphs of Ba4Co2O8 are known?
What elements does Ba4Co2O8 contain?
Where does the data for Ba4Co2O8 come from?
Related Compounds
Other Oxide Oxygen-Evolution Catalysts in the database.
Data sources & attribution
- materials_project — Data from the Materials Project. Cite: Jain et al., APL Materials 1, 011002 (2013).
- omat24 — Data from OMat24 (Meta FAIR). Cite: Barroso-Luque et al., arXiv 2410.12771 (2024).
- aflow — Data from AFLOW. Cite: Curtarolo et al., Comp. Mater. Sci. 58, 218 (2012).
- cod — Data from the Crystallography Open Database. Cite: Grazulis et al., Nucleic Acids Res. 40, D420 (2012).
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