Sr2Bi2O5
Sr2Bi2O5 is a thermodynamically stable semiconducting oxide composed of strontium, bismuth, and oxygen.
About Sr2Bi2O5
Sr2Bi2O5 is a complex oxide composed of strontium, bismuth, and oxygen. As a thermodynamically stable compound residing on the convex hull, it represents a robust phase within its compositional family, offering a reliable structural foundation for further investigation.
Exhibiting semiconducting electronic character, this material is of interest for applications where tunable electronic properties are required. Its existence across multiple reported structures highlights its structural versatility and importance in the study of bismuth-based oxide systems.
Key Properties
Cross-validated computational properties for Sr2Bi2O5, aggregated across 2 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 Sr2Bi2O5. 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 Sr2Bi2O5, 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. |
|---|---|---|---|---|---|
| — | — | 2.37 | 0.0000 | -2.213 | — |
| P21/m (No. 11) | monoclinic | 2.27 | 0.0000 | -6.343 | 6.55 |
| Pnma (No. 62) | orthorhombic | 2.26 | 0.0002 | -6.343 | 6.55 |
| Amm2 (No. 38) | orthorhombic | 0.40 | 0.1368 | -6.206 | 6.09 |
| — | — | 0.00 | 0.2108 | -2.002 | — |
| — | — | 0.00 | 0.6155 | -1.597 | — |
| Cmcm (No. 63) | orthorhombic | — | — | — | 6.61 |
| P21/m (No. 11) | monoclinic | — | — | — | 6.62 |
| P21/m (No. 11) | monoclinic | — | — | — | 6.42 |
| P21/m (No. 11) | monoclinic | — | — | — | 6.29 |
Synthesis Routes
Literature-extracted synthesis procedures targeting Sr2Bi2O5.
Applications
Where Sr2Bi2O5 is used.
Frequently Asked Questions
Common questions about Sr2Bi2O5, answered from cross-validated data.
What is Sr2Bi2O5?
Sr2Bi2O5 is a thermodynamically stable semiconducting oxide composed of strontium, bismuth, and oxygen.
What is Sr2Bi2O5 used for?
What is the band gap of Sr2Bi2O5?
Is Sr2Bi2O5 a metal, semiconductor, or insulator?
Is Sr2Bi2O5 thermodynamically stable?
What is the crystal structure of Sr2Bi2O5?
What is the density of Sr2Bi2O5?
How many polymorphs of Sr2Bi2O5 are known?
How is Sr2Bi2O5 synthesized?
What elements does Sr2Bi2O5 contain?
Where does the data for Sr2Bi2O5 come from?
How It Compares
As a distinct member of the bismuth-strontium-oxygen system, Sr2Bi2O5 serves as a stable reference point for exploring the electronic and structural landscape of complex oxides, standing as a well-defined phase within its chemical space.
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)
- 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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