SrRuO3
Strontium ruthenate · SRO
SrRuO3 is a stable, semimetallic perovskite oxide widely investigated for its catalytic properties and its utility as a conductive electrode in electronic devices.
About Strontium ruthenate
SrRuO3 is a perovskite-structured oxide characterized by its semimetallic electronic nature. As a thermodynamically stable member of the oxide family, it maintains a robust structural integrity that makes it a subject of extensive research in condensed matter physics and catalysis. Its unique electronic configuration allows for significant versatility in thin-film applications and electrochemical processes.
This compound is widely recognized for its role in oxygen-evolution catalysis, where its stability and conductive properties are highly valued. Beyond its catalytic potential, it is frequently utilized as a metallic electrode material in integrated oxide heterostructures, benefiting from its compatibility with other perovskite oxides.
Key Properties
Cross-validated computational properties for Strontium ruthenate, 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 SrRuO3, 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. |
|---|---|---|---|---|---|
| P-31m (No. 162) | trigonal | 0.03 | 0.0000 | -7.460 | 5.71 |
| Pnma (No. 62) | orthorhombic | 0.00 | 0.0000 | -7.353 | 6.46 |
| Imma (No. 74) | orthorhombic | 0.00 | 0.0037 | -7.349 | 6.46 |
| I4/mcm (No. 140) | tetragonal | 0.00 | 0.0066 | -7.346 | 6.46 |
| Pm-3m (No. 221) | cubic | 0.00 | 0.0413 | -7.311 | 6.20 |
| Cmcm (No. 63) | orthorhombic | 0.00 | 0.0430 | -7.310 | 6.31 |
| Imm2 (No. 44) | orthorhombic | 0.00 | 0.1648 | -7.295 | 6.12 |
| Pnma (No. 62) | orthorhombic | 0.00 | 0.4966 | -6.856 | 4.06 |
| Pnma (No. 62) | orthorhombic | 0.00 | 0.5097 | -6.843 | 4.45 |
| P4/mmm (No. 123) | tetragonal | 0.00 | 0.5107 | -6.842 | 4.41 |
| Pnma (No. 62) | orthorhombic | 0.01 | 4.1603 | -3.192 | 0.50 |
| I4/mcm (No. 140) | — | — | — | — | — |
Applications
Where Strontium ruthenate is used.
Frequently Asked Questions
Common questions about Strontium ruthenate, answered from cross-validated data.
What is SrRuO3?
SrRuO3 is a stable, semimetallic perovskite oxide widely investigated for its catalytic properties and its utility as a conductive electrode in electronic devices.
What is SrRuO3 used for?
What is the band gap of SrRuO3?
Is SrRuO3 a metal, semiconductor, or insulator?
Is SrRuO3 thermodynamically stable?
What is the crystal structure of SrRuO3?
What is the density of SrRuO3?
How many polymorphs of SrRuO3 are known?
What elements does SrRuO3 contain?
Where does the data for SrRuO3 come from?
How It Compares
Within the oxide oxygen-evolution catalysts class.
Unlike the insulating or wide-gap semiconducting oxides such as NiO or BiFeO3, SrRuO3 functions as a semimetal, providing superior electrical conductivity that is essential for its performance as an electrode. While it shares the perovskite framework with materials like LaMnO3 and LaNiO3, its specific ruthenium-based chemistry offers distinct catalytic activity for oxygen evolution that differentiates it from the lithium-based transition metal oxides like LiCoO2 or LiMn2O4.
Related Compounds
Other Oxide Oxygen-Evolution 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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