CaLaAl3O7
CaLaAl3O7 has a DFT band gap of 4.44 eV across 1 reported structure in 1 space group; its reference structure is monoclinic (P21 (No. 4)). Cross-validated across 1 computational databases.
AlCaLaO
At a glance
Key Properties
Cross-validated computational properties for CaLaAl3O7, aggregated across 1 database.
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.
4.44 eV
Range across DFT structures · ground state: insulator
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.
0.010 eV/atom
Best (lowest) across sources
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.
Stable
2 DFT sources
StructuresCount of reported calculated crystal structures for this formula, including alternate polymorphs, source databases, and observed space groups.
1
1 database, 1 space group
Validation
Cross-Source DFT Agreement
How well independent DFT databases agree on the thermodynamics of CaLaAl3O7. 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.
0.96 / 1.00
Trust tier: medium
Hull SpreadDifference between the highest and lowest energy-above-hull values reported by comparable sources. Smaller spread means less thermodynamic disagreement.
0.010 eV
EAH spread across sources
Sources ComparedNumber and names of computational sources with comparable entries for this formula.
2
jarvis, materials_project
Space Group ConsensusWhether independent sources predict the same crystal symmetry for the lowest-energy structure.
Mixed (most: P21 (No. 4))
Crystallography
Reported Structures
Lowest-energy structures reported for CaLaAl3O7, 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 (No. 4) | monoclinic | 4.38 | 0.0000 | -7.976 | 3.83 |
| Cmm2 (No. 35) | orthorhombic | 4.40 | 0.0022 | -7.974 | 3.85 |
| Cmm2 (No. 35) | orthorhombic | 4.44 | 0.0099 | -3.450 | — |
Synthesis
Synthesis Routes
Literature-extracted synthesis procedures targeting CaLaAl3O7.
Sol Gel
Procedure available · ceder_sol_gel
Reference
Frequently Asked Questions
Common questions about CaLaAl3O7, answered from cross-validated data.
What is the band gap of CaLaAl3O7?
CaLaAl3O7 has a DFT-computed band gap of 4.44 eV. Standard DFT underestimates band gaps, so the measured gap is typically larger.
More questions
Is CaLaAl3O7 a metal, semiconductor, or insulator?
DFT predicts a wide band gap of up to 4.44 eV (an insulator or wide-band-gap material).
Is CaLaAl3O7 thermodynamically stable?
CaLaAl3O7 has a lowest energy above hull of 0.010 eV/atom (stable).
What is the crystal structure of CaLaAl3O7?
The reference structure of CaLaAl3O7 is monoclinic symmetry, space group P21 (No. 4).
What is the density of CaLaAl3O7?
The computed density of the ground-state structure of CaLaAl3O7 is 3.83 g/cm³.
How is CaLaAl3O7 synthesized?
Literature-reported routes for CaLaAl3O7 include sol gel.
What elements does CaLaAl3O7 contain?
CaLaAl3O7 contains Al, Ca, La, and O (4 elements).
Where does the data for CaLaAl3O7 come from?
CaLaAl3O7 data is cross-referenced from materials_project, jarvis.
Data sources & attribution
- 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)
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