Cr1Ga1Ir2
Cr1Ga1Ir2 is a semiconducting intermetallic alloy composed of chromium, gallium, and iridium that is currently studied for its unique electronic properties.
About Cr1Ga1Ir2
Cr1Ga1Ir2 is a specialized intermetallic compound categorized within the platinum-group alloy catalysts. Its electronic character is defined as semiconducting, marking a distinct departure from the metallic behavior typically associated with many platinum-group materials. The compound exhibits structural complexity, as evidenced by its presence in multiple reported structural configurations.
Due to its position above the thermodynamic hull, this material is considered potentially unstable under standard conditions. Its role in the broader landscape of alloy catalysts is primarily academic, serving as a subject for understanding the interplay between transition metals and p-block elements in forming non-metallic electronic states.
Key Properties
Cross-validated computational properties for Cr1Ga1Ir2, aggregated across 2 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 Cr1Ga1Ir2, 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. |
|---|---|---|---|---|---|
| Immm (No. 71) | orthorhombic | 0.20 | 3.1104 | -30.034 | 1.27 |
| Pm (No. 6) | — | — | — | — | — |
| P4/mmm (No. 123) | — | — | — | — | — |
| Pmmm (No. 47) | — | — | — | — | — |
| P2/m (No. 10) | — | — | — | — | — |
| Cm (No. 8) | — | — | — | — | — |
| Cmmm (No. 65) | — | — | — | — | — |
| P4mm (No. 99) | — | — | — | — | — |
| C2/m (No. 12) | — | — | — | — | — |
| I-4m2 (No. 119) | — | — | — | — | — |
| P4/mmm (No. 123) | — | — | — | — | — |
| P4mm (No. 99) | — | — | — | — | — |
Applications
Where Cr1Ga1Ir2 is used.
Frequently Asked Questions
Common questions about Cr1Ga1Ir2, answered from cross-validated data.
What is Cr1Ga1Ir2?
Cr1Ga1Ir2 is a semiconducting intermetallic alloy composed of chromium, gallium, and iridium that is currently studied for its unique electronic properties.
What is Cr1Ga1Ir2 used for?
What is the band gap of Cr1Ga1Ir2?
Is Cr1Ga1Ir2 a metal, semiconductor, or insulator?
Is Cr1Ga1Ir2 thermodynamically stable?
What is the crystal structure of Cr1Ga1Ir2?
What is the density of Cr1Ga1Ir2?
How many polymorphs of Cr1Ga1Ir2 are known?
What elements does Cr1Ga1Ir2 contain?
Where does the data for Cr1Ga1Ir2 come from?
How It Compares
Within the platinum-group alloy catalysts class.
Unlike more stable or well-characterized members of the platinum-group alloy class such as As2Ir or GeRu, Cr1Ga1Ir2 occupies a more precarious thermodynamic state. While many siblings in this group are prized for their robust metallic conductivity and catalytic durability, this compound is notable for its semiconducting nature, which differentiates it from the highly conductive phases found in typical platinum-group intermetallics.
Related Compounds
Other Platinum-Group Alloy Catalysts in the database.
Data sources & attribution
- materials_project — Data from the Materials Project. Cite: Jain et al., APL Materials 1, 011002 (2013).
- aflow — Data from AFLOW. Cite: Curtarolo et al., Comp. Mater. Sci. 58, 218 (2012).
Analyze Cr1Ga1Ir2 in the Lattice Graph platform
Polymorph comparison, confidence scoring, supply-chain risk, and patent monitoring — across 53 integrated data sources.
Explore the Platform →