BaYCo4O7
BaYCo4O7 is a semiconducting oxide characterized by its near-hull stability and structural versatility.
About BaYCo4O7
BaYCo4O7 is a complex oxide composed of barium, yttrium, cobalt, and oxygen. It exhibits semiconducting electronic properties and is recognized as a near-hull material, indicating it is likely synthesizable under controlled experimental conditions. Its structural complexity is highlighted by multiple reported configurations across various databases. This material is of significant interest to researchers investigating transition metal oxides for their unique electronic and magnetic behaviors. Its ability to maintain structural integrity while offering tunable properties makes it a subject of ongoing study in solid-state chemistry.
Key Properties
Cross-validated computational properties for BaYCo4O7, aggregated across 3 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.
Cross-Source DFT Agreement
How well independent DFT databases agree on the thermodynamics of BaYCo4O7. Tight agreement means computed properties can be trusted without re-running calculations.
Agreement ScoreA normalized confidence score summarizing how closely independent DFT databases agree. Higher scores mean tighter cross-source agreement.
Hull SpreadDifference between the highest and lowest energy-above-hull values reported by comparable sources. Smaller spread means less thermodynamic disagreement.
Sources ComparedNumber and names of computational sources with comparable entries for this formula.
Space Group ConsensusWhether independent sources predict the same crystal symmetry for the lowest-energy structure.
Reported Structures
Lowest-energy structures reported for BaYCo4O7, 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. |
|---|---|---|---|---|---|
| — | — | 0.94 | 0.0000 | -2.023 | — |
| Cmc21 (No. 36) | orthorhombic | 0.75 | 0.0221 | -7.560 | 5.15 |
| P63mc (No. 186) | hexagonal | 0.00 | 0.0356 | -7.546 | 5.16 |
| Cc (No. 9) | monoclinic | 0.00 | 0.0465 | -7.535 | 5.17 |
| Cc (No. 9) | monoclinic | 0.00 | 0.1108 | -1.810 | — |
| P63mc (No. 186) | hexagonal | — | — | — | 5.42 |
| Cc (No. 9) | monoclinic | — | — | — | 5.17 |
| Cc (No. 9) | monoclinic | — | — | — | 5.49 |
| Cc (No. 9) | monoclinic | — | — | — | 5.61 |
Synthesis Routes
Literature-extracted synthesis procedures targeting BaYCo4O7.
Applications
Where BaYCo4O7 is used.
Frequently Asked Questions
Common questions about BaYCo4O7, answered from cross-validated data.
What is BaYCo4O7?
BaYCo4O7 is a semiconducting oxide characterized by its near-hull stability and structural versatility.
What is BaYCo4O7 used for?
What is the band gap of BaYCo4O7?
Is BaYCo4O7 a metal, semiconductor, or insulator?
Is BaYCo4O7 thermodynamically stable?
What is the crystal structure of BaYCo4O7?
What is the density of BaYCo4O7?
How many polymorphs of BaYCo4O7 are known?
How is BaYCo4O7 synthesized?
What elements does BaYCo4O7 contain?
Where does the data for BaYCo4O7 come from?
How It Compares
As a unique oxide, BaYCo4O7 occupies a distinct niche in the landscape of complex transition metal compounds. Without direct structural siblings in its immediate class, it serves as a primary reference point for understanding how the integration of yttrium and cobalt within a barium-oxygen framework influences electronic transport and stability.
Data sources & attribution
- oqmd — Data from the OQMD (oqmd.org). Cite: Saal et al., JOM 65, 1501 (2013); Kirklin et al., npj Comp. Mater. 1, 15010 (2015). (CC-BY-4.0)
- materials_project — Data from the Materials Project (materialsproject.org). Cite: Jain et al., APL Materials 1, 011002 (2013). (CC-BY-4.0)
- jarvis — Data from JARVIS (jarvis.nist.gov), NIST. Cite: Choudhary et al., npj Comp. Mater. 6, 173 (2020). (LicenseRef-US-Gov-PD)
- cod — Data from the Crystallography Open Database (crystallography.net/cod/). Cite: Grazulis et al., J. Appl. Cryst. 42, 726 (2009). (CC0-1.0)
- mpaloe — Data from MP-ALOE. Cite: Kuner et al., npj Comput. Mater. (2025), doi:10.1038/s41524-025-01834-9.
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