Sr3Cr2O8
Sr3Cr2O8 is a semiconducting strontium chromium oxide used in the study of advanced catalytic materials.
About Sr3Cr2O8
Sr3Cr2O8 is a semiconducting oxide that belongs to the broader family of spinel-related catalysts. Its composition, featuring strontium and chromium, positions it as a material of interest for researchers investigating complex transition metal oxides with specific electronic configurations. The compound is identified as being near-hull in thermodynamic stability, suggesting it is a viable candidate for experimental synthesis and characterization.
As a member of the oxide catalyst class, it serves as a platform for exploring surface-active sites and redox behavior. Its structural versatility is evidenced by multiple reported crystal structures, which provide a foundation for understanding how its atomic arrangement influences its performance in catalytic environments.
Key Properties
Cross-validated computational properties for Sr3Cr2O8, 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.
Reported Structures
Lowest-energy structures reported for Sr3Cr2O8, 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/m (No. 11) | monoclinic | 0.99 | 0.0042 | -7.548 | 4.37 |
| R-3m (No. 166) | trigonal | 0.00 | 0.0052 | -7.547 | 4.56 |
| R-3m (No. 166) | — | — | — | — | — |
| R-3m (No. 166) | Trigonal | — | — | — | 4.37 |
| R-3m (No. 166) | Trigonal | — | — | — | 4.48 |
| R-3m (No. 166) | Trigonal | — | — | — | 4.68 |
Applications
Where Sr3Cr2O8 is used.
Frequently Asked Questions
Common questions about Sr3Cr2O8, answered from cross-validated data.
What is Sr3Cr2O8?
Sr3Cr2O8 is a semiconducting strontium chromium oxide used in the study of advanced catalytic materials.
What is Sr3Cr2O8 used for?
What is the band gap of Sr3Cr2O8?
Is Sr3Cr2O8 a metal, semiconductor, or insulator?
Is Sr3Cr2O8 thermodynamically stable?
What is the crystal structure of Sr3Cr2O8?
What is the density of Sr3Cr2O8?
How many polymorphs of Sr3Cr2O8 are known?
What elements does Sr3Cr2O8 contain?
Where does the data for Sr3Cr2O8 come from?
How It Compares
Within the spinel oxide catalysts class.
Unlike the highly stable and widely utilized binary oxides like ZnO or Al2O3, Sr3Cr2O8 represents a more complex ternary phase that offers nuanced electronic properties. While simple oxides often serve as structural supports or basic catalytic components, this compound provides a more specialized electronic landscape, similar to the perovskite-based members of the class like LaMnO3 or LaNiO3, which are frequently studied for their specific magnetic and catalytic interactions.
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).
- jarvis — Data from JARVIS (NIST). Cite: Choudhary et al., npj Comp. Mater. 6, 173 (2020).
- mpaloe — Data from mpaloe.
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