SrCrO4
Strontium chromate · Strontium yellow, Gelbin
Strontium chromate is a yellow inorganic pigment known for its strong corrosion-inhibiting properties. It is primarily utilized in industrial coatings to protect metal surfaces from oxidation and degradation.
Overview
Key Properties
Cross-validated computational properties for Strontium chromate, aggregated across 4 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.
1.60–2.89 eV
Range across DFT structures
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.
0.000 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.
On hull (stable)
2 DFT sources
StructuresCount of reported calculated crystal structures for this formula, including alternate polymorphs, source databases, and observed space groups.
16
4 databases, 3 space groups
Crystallography
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 |
| P21/c (No. 14) | monoclinic | 2.89 | 0.0882 | -7.550 | 3.13 |
| 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 |
| No. 0 | unknown | — | — | — | 0.99 |
| P21/c (No. 14) | — | — | — | — | — |
| P21/c (No. 14) | Monoclinic | — | — | — | 3.83 |
| Cmcm (No. 63) | — | — | — | — | — |
| P21/c (No. 14) | Monoclinic | — | — | — | 4.02 |
| P21/c (No. 14) | Monoclinic | — | — | — | 3.13 |
| P21/c (No. 14) | Monoclinic | — | — | — | 3.76 |
| P21/c (No. 14) | monoclinic | — | — | — | 0.99 |
Uses
Applications
Where Strontium chromate is used.
Corrosion-inhibiting primersPigment for paints and coatingsPyrotechnic compositionsMetal surface treatment
Reference
Frequently Asked Questions
Common questions about Strontium chromate, answered from cross-validated data.
What is SrCrO4?
Strontium chromate is a yellow inorganic pigment known for its strong corrosion-inhibiting properties. It is primarily utilized in industrial coatings to protect metal surfaces from oxidation and degradation.
More questions
What is SrCrO4 used for?
Strontium chromate (SrCrO4) is used in corrosion-inhibiting primers, pigment for paints and coatings, pyrotechnic compositions, and metal surface treatment.
What is the band gap of SrCrO4?
Strontium chromate (SrCrO4) has a DFT-computed band gap of 1.60–2.89 eV across 16 reported structures.
Is SrCrO4 a metal, semiconductor, or insulator?
With a band gap up to 2.89 eV it is a semiconductor.
Is SrCrO4 thermodynamically stable?
Yes — Strontium chromate (SrCrO4) sits on the convex hull (energy above hull 0 eV/atom), i.e. on hull (stable).
What is the crystal structure of SrCrO4?
The lowest-energy reported polymorph of Strontium chromate (SrCrO4) is monoclinic symmetry, space group P21/c (No. 14).
What is the density of SrCrO4?
The computed density of the ground-state structure of Strontium chromate (SrCrO4) is 3.93 g/cm³.
How many polymorphs of SrCrO4 are known?
16 structures of SrCrO4 are reported across 4 databases, spanning 3 distinct space groups.
What elements does SrCrO4 contain?
Strontium chromate (SrCrO4) contains Cr, O, and Sr (3 elements).
Where does the data for SrCrO4 come from?
SrCrO4 data is cross-referenced from materials_project, cod, jarvis, mpaloe.
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Related Compounds
Other Spinel Oxide Catalysts in the database.
Data sources & attribution
- materials_project — Data from the Materials Project. Cite: Jain et al., APL Materials 1, 011002 (2013).
- cod — Data from the Crystallography Open Database. Cite: Grazulis et al., Nucleic Acids Res. 40, D420 (2012).
- jarvis — Data from JARVIS (NIST). Cite: Choudhary et al., npj Comp. Mater. 6, 173 (2020).
- mpaloe — Data from mpaloe.
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