Ba2La4O8
Ba2La4O8 is a thermodynamically stable, insulating complex oxide containing barium and lanthanum.
About Ba2La4O8
Ba2La4O8 is a complex oxide composed of barium, lanthanum, and oxygen. As a wide-band-gap insulator, it exhibits robust electronic properties that make it a subject of interest for fundamental materials science research and potential dielectric applications.
This compound is characterized by its thermodynamic stability, as it sits on the convex hull of its constituent elements. With multiple reported crystal structures across databases, it represents a well-defined phase within the barium-lanthanum-oxygen chemical space.
Key Properties
Cross-validated computational properties for Ba2La4O8, 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.
Reported Structures
Lowest-energy structures reported for Ba2La4O8, 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. |
|---|---|---|---|---|---|
| Pnma (No. 62) | orthorhombic | 3.13 | 0.0000 | -8.118 | 6.32 |
| Fd-3m (No. 227) | cubic | 3.70 | 0.0239 | -8.094 | 5.50 |
| Cmcm (No. 63) | orthorhombic | 2.68 | 0.0653 | -8.053 | 6.03 |
| C2/c (No. 15) | monoclinic | 3.36 | 0.0776 | -8.041 | 5.63 |
| — | — | — | — | — | 6.03 |
| Fd-3m (No. 227) | — | — | — | — | — |
| — | — | — | — | — | 5.85 |
Applications
Where Ba2La4O8 is used.
Frequently Asked Questions
Common questions about Ba2La4O8, answered from cross-validated data.
What is Ba2La4O8?
Ba2La4O8 is a thermodynamically stable, insulating complex oxide containing barium and lanthanum.
What is Ba2La4O8 used for?
What is the band gap of Ba2La4O8?
Is Ba2La4O8 a metal, semiconductor, or insulator?
Is Ba2La4O8 thermodynamically stable?
What is the crystal structure of Ba2La4O8?
What is the density of Ba2La4O8?
How many polymorphs of Ba2La4O8 are known?
What elements does Ba2La4O8 contain?
Where does the data for Ba2La4O8 come from?
How It Compares
As a thermodynamically stable oxide, Ba2La4O8 serves as a benchmark phase in the study of complex barium-lanthanum ceramics, providing a reliable structural reference point for exploring the broader landscape of insulating ternary oxides.
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).
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