Ba3BiP
Ba3BiP has a DFT band gap of 0.10 eV across 6 reported structures in 3 space groups; its reference structure is cubic (Pm-3m (No. 221)). Cross-validated across 3 computational databases.
BaBiP
At a glance
Key Properties
Cross-validated computational properties for Ba3BiP, 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.
0.10 eV
Range across DFT structures · ground state: narrow gap
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.
0.084 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.
Metastable
3 DFT sources
StructuresCount of reported calculated crystal structures for this formula, including alternate polymorphs, source databases, and observed space groups.
6
3 databases, 3 space groups
Validation
Cross-Source DFT Agreement
How well independent DFT databases agree on the thermodynamics of Ba3BiP. 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.
0.93 / 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.
0.018 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.
All match
Crystallography
Reported Structures
Lowest-energy structures reported for Ba3BiP, 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. |
|---|---|---|---|---|---|
| Pm-3m (No. 221) | cubic | 0.10 | 0.0835 | -0.913 | — |
| Pm-3m (No. 221) | cubic | 0.00 | 0.1010 | -3.858 | 4.67 |
| Pm-3m (No. 221) | cubic | 0.00 | 0.7952 | -3.163 | 3.87 |
| Pm-3m (No. 221) | cubic | 0.00 | 0.8040 | -0.192 | — |
| Cmcm (No. 63) | orthorhombic | — | — | — | 4.97 |
| Cmmm (No. 65) | orthorhombic | — | — | — | 4.93 |
Reference
Frequently Asked Questions
Common questions about Ba3BiP, answered from cross-validated data.
What is the band gap of Ba3BiP?
Ba3BiP has a DFT-computed band gap of 0.10 eV across 6 reported structures. Standard DFT underestimates band gaps, so the measured gap is typically larger.
More questions
Is Ba3BiP a metal, semiconductor, or insulator?
DFT predicts a near-zero band gap ((semi)metallic). Standard DFT underestimates gaps, so the real material may be a semiconductor.
Is Ba3BiP thermodynamically stable?
Ba3BiP has a lowest energy above hull of 0.084 eV/atom (metastable).
What is the crystal structure of Ba3BiP?
The reference structure of Ba3BiP is cubic symmetry, space group Pm-3m (No. 221).
How many polymorphs of Ba3BiP are known?
6 structures of Ba3BiP are reported across 3 databases, spanning 3 distinct space groups.
What elements does Ba3BiP contain?
Ba3BiP contains Ba, Bi, and P (3 elements).
Where does the data for Ba3BiP come from?
Ba3BiP data is cross-referenced from jarvis, materials_project, alexandria.
Data sources & attribution
- jarvis — Data from JARVIS (jarvis.nist.gov), NIST. Cite: Choudhary et al., npj Comp. Mater. 6, 173 (2020). (LicenseRef-US-Gov-PD)
- materials_project — Data from the Materials Project (materialsproject.org). Cite: Jain et al., APL Materials 1, 011002 (2013). (CC-BY-4.0)
- alexandria — Data from Alexandria. Cite: Schmidt et al., npj Comput. Mater. 10, 200 (2024). (CC-BY-4.0)
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