SrV4O9
SrV4O9 is a metastable semiconducting oxide of strontium and vanadium used in fundamental materials research.
About SrV4O9
SrV4O9 is a complex oxide composed of strontium, vanadium, and oxygen. As a semiconducting material, it represents a unique intersection of transition metal chemistry and alkaline earth metal coordination, offering a distinct electronic profile for researchers investigating specialized oxide systems.
Because it exists in a metastable state, this compound requires precise synthesis conditions to stabilize its crystalline framework. Its existence across multiple structural databases highlights its significance as a subject of ongoing study in solid-state chemistry and materials science.
Key Properties
Cross-validated computational properties for SrV4O9, 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 SrV4O9. 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 SrV4O9, 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. |
|---|---|---|---|---|---|
| — | — | 2.28 | 0.0292 | -2.634 | — |
| P4/n (No. 85) | tetragonal | 2.51 | 0.0337 | -8.542 | 3.90 |
| P4/n (No. 85) | tetragonal | 0.68 | 0.0693 | -2.658 | — |
| P4/n (No. 85) | tetragonal | 0.72 | 0.0803 | -2.647 | — |
| P4/n (No. 85) | tetragonal | — | — | — | 3.63 |
| P4/n (No. 85) | tetragonal | — | — | — | 3.71 |
| P4/n (No. 85) | tetragonal | — | — | — | 3.99 |
| P4/n (No. 85) | tetragonal | — | — | — | 3.92 |
Applications
Where SrV4O9 is used.
Frequently Asked Questions
Common questions about SrV4O9, answered from cross-validated data.
What is SrV4O9?
SrV4O9 is a metastable semiconducting oxide of strontium and vanadium used in fundamental materials research.
What is SrV4O9 used for?
What is the band gap of SrV4O9?
Is SrV4O9 a metal, semiconductor, or insulator?
Is SrV4O9 thermodynamically stable?
What is the crystal structure of SrV4O9?
What is the density of SrV4O9?
How many polymorphs of SrV4O9 are known?
What elements does SrV4O9 contain?
Where does the data for SrV4O9 come from?
How It Compares
As a unique oxide system, SrV4O9 occupies a specialized niche within the broader landscape of strontium-vanadium-oxygen compounds, serving as a key reference point for understanding the structural diversity and electronic behavior inherent in metastable vanadium-based oxides.
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)
- jarvis — Data from JARVIS (jarvis.nist.gov), NIST. Cite: Choudhary et al., npj Comp. Mater. 6, 173 (2020). (LicenseRef-US-Gov-PD)
- mpaloe — Data from MP-ALOE. Cite: Kuner et al., npj Comput. Mater. (2025), doi:10.1038/s41524-025-01834-9.
- cod — Data from the Crystallography Open Database (crystallography.net/cod/). Cite: Grazulis et al., J. Appl. Cryst. 42, 726 (2009). (CC0-1.0)
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