SrCrO4
Strontium chromate · Strontium yellow
Strontium chromate is a stable, semiconducting oxide compound primarily utilized for its protective and pigment-based properties.
About Strontium chromate
Strontium chromate is a distinct inorganic compound characterized by its semiconducting electronic nature. As a thermodynamically stable member of the oxide family, it maintains structural integrity under standard conditions, making it a reliable material for specialized chemical and industrial applications.
Its utility is largely driven by its chemical stability and unique reactivity profile. It serves as a critical component in various surface treatment technologies, where its properties contribute to the inhibition of corrosion and the formulation of high-performance pigments.
Key Properties
Cross-validated computational properties for Strontium chromate, 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 SrCrO4. 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 SrCrO4, 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/c (No. 14) | monoclinic | 2.86 | 0.0000 | -7.638 | 3.93 |
| — | — | 2.71 | 0.0000 | -2.403 | — |
| P21/c (No. 14) | monoclinic | 2.66 | 0.0000 | -2.594 | — |
| Cmcm (No. 63) | orthorhombic | 2.28 | 0.0011 | -2.592 | — |
| P21/c (No. 14) | monoclinic | 2.66 | 0.0021 | -2.591 | — |
| — | — | 3.04 | 0.0090 | -2.394 | — |
| — | — | 2.61 | 0.0272 | -2.376 | — |
| P21/c (No. 14) | monoclinic | 2.84 | 0.0882 | -7.550 | 3.13 |
| — | — | 3.03 | 0.3511 | -2.052 | — |
| — | — | 0.76 | 0.6151 | -1.788 | — |
| P21/c (No. 14) | monoclinic | 2.23 | 0.6290 | -7.009 | 3.16 |
| P21/c (No. 14) | monoclinic | 1.60 | 0.8015 | -6.837 | 2.85 |
Synthesis Routes
Literature-extracted synthesis procedures targeting SrCrO4.
Applications
Where Strontium chromate is used.
Frequently Asked Questions
Common questions about Strontium chromate, answered from cross-validated data.
What is SrCrO4?
Strontium chromate is a stable, semiconducting oxide compound primarily utilized for its protective and pigment-based properties.
What is SrCrO4 used for?
What is the band gap of SrCrO4?
Is SrCrO4 a metal, semiconductor, or insulator?
Is SrCrO4 thermodynamically stable?
What is the crystal structure of SrCrO4?
What is the density of SrCrO4?
How many polymorphs of SrCrO4 are known?
How is SrCrO4 synthesized?
What elements does SrCrO4 contain?
Where does the data for SrCrO4 come from?
How It Compares
Within the spinel oxide catalysts class.
Within the diverse group of spinel and related oxide catalysts, SrCrO4 occupies a specific niche compared to binary oxides like NiO or ZnO. While simple binary oxides are frequently studied for their basic catalytic and electronic properties, SrCrO4 offers a more complex structural framework that differentiates it from simpler systems like Al2O3 or MgAl2O4, allowing for tailored performance in specialized chemical environments.
Related Compounds
Other Spinel Oxide Catalysts 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)
- 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)
- jarvis — Data from JARVIS (jarvis.nist.gov), NIST. Cite: Choudhary et al., npj Comp. Mater. 6, 173 (2020). (LicenseRef-US-Gov-PD)
- 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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