Bi2O7Sn2
Bi2O7Sn2 is a stable, semiconducting perovskite oxide composed of bismuth, tin, and oxygen.
About Bi2O7Sn2
Bi2O7Sn2 is a distinct member of the perovskite oxide family, characterized by its semiconducting electronic nature. As a thermodynamically stable phase residing on the convex hull, it represents a robust material choice for researchers investigating complex oxide systems. Its unique arrangement of bismuth, tin, and oxygen atoms provides a framework for exploring functional properties in solid-state chemistry.
This compound is primarily studied for its potential in electronic and optoelectronic applications where stability and semiconducting behavior are critical. By leveraging its position within the broader perovskite class, scientists utilize this material to understand how heavy metal cations influence the electronic landscape of oxide lattices.
Key Properties
Cross-validated computational properties for Bi2O7Sn2, 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 Bi2O7Sn2. Tight agreement means computed properties can be trusted without re-running calculations.
Only 1 independent DFT source (materials_project) reports a hull energy for Bi2O7Sn2, so cross-source agreement can't be assessed yet.
Reported Structures
Lowest-energy structures reported for Bi2O7Sn2, 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. |
|---|---|---|---|---|---|
| P31 (No. 144) | trigonal | 2.67 | 0.0000 | -6.521 | 8.05 |
| Fd-3m (No. 227) | cubic | 2.71 | 0.0116 | -6.510 | 8.51 |
| Pc (No. 7) | monoclinic | — | — | — | — |
| Fd-3m (No. 227) | cubic | — | — | — | — |
| P31 (No. 144) | trigonal | — | — | — | 8.28 |
Synthesis Routes
Literature-extracted synthesis procedures targeting Bi2O7Sn2.
Applications
Where Bi2O7Sn2 is used.
Frequently Asked Questions
Common questions about Bi2O7Sn2, answered from cross-validated data.
What is Bi2O7Sn2?
Bi2O7Sn2 is a stable, semiconducting perovskite oxide composed of bismuth, tin, and oxygen.
What is Bi2O7Sn2 used for?
What is the band gap of Bi2O7Sn2?
Is Bi2O7Sn2 a metal, semiconductor, or insulator?
Is Bi2O7Sn2 thermodynamically stable?
What is the crystal structure of Bi2O7Sn2?
How many polymorphs of Bi2O7Sn2 are known?
How is Bi2O7Sn2 synthesized?
What elements does Bi2O7Sn2 contain?
Where does the data for Bi2O7Sn2 come from?
How It Compares
Within the perovskite oxides class.
While widely recognized perovskites like BaTiO3 and BiFeO3 are often studied for their ferroelectric or multiferroic properties, Bi2O7Sn2 distinguishes itself through its specific semiconducting character and distinct cation composition. Unlike the lanthanum-based perovskites such as LaNiO3 or LaMnO3, which are frequently investigated for their magnetic and metallic transitions, Bi2O7Sn2 offers a stable, semiconducting alternative that broadens the structural diversity available to materials designers working within the perovskite framework.
Related Compounds
Other Perovskite Oxides in the database.
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)
- cod — Data from the Crystallography Open Database (crystallography.net/cod/). Cite: Grazulis et al., J. Appl. Cryst. 42, 726 (2009). (CC0-1.0)
- nomad — Data from NOMAD (nomad-lab.eu). Cite: Draxl & Scheffler, J. Phys. Mater. 2, 036001 (2019). (CC-BY-4.0)
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