Al3Ir
Al3Ir is a stable, metallic intermetallic alloy composed of aluminum and iridium that is frequently studied for its structural properties in catalysis.
About Al3Ir
Al3Ir is a metallic intermetallic compound belonging to the class of platinum-group alloy catalysts. As a thermodynamically stable phase located on the convex hull, it represents a robust structural arrangement of aluminum and iridium atoms that is highly favored in the solid state.
This material is characterized by its distinct lack of a band gap, confirming its metallic electronic nature. With dozens of reported structures across major databases, it serves as a significant reference point for researchers investigating the interplay between noble metals and light elements in catalytic applications.
Key Properties
Cross-validated computational properties for Al3Ir, 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.
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.
Applications
Where Al3Ir is used.
Frequently Asked Questions
Common questions about Al3Ir, answered from cross-validated data.
What is Al3Ir?
Al3Ir is a stable, metallic intermetallic alloy composed of aluminum and iridium that is frequently studied for its structural properties in catalysis.
What is Al3Ir used for?
What is the band gap of Al3Ir?
Is Al3Ir a metal, semiconductor, or insulator?
Is Al3Ir thermodynamically stable?
How many polymorphs of Al3Ir are known?
What elements does Al3Ir contain?
Where does the data for Al3Ir come from?
How It Compares
Within the platinum-group alloy catalysts class.
Within the diverse family of platinum-group alloy catalysts, Al3Ir stands out for its high thermodynamic stability compared to more complex or metastable variants like As2Ir or Ga2Ru. While many members of this class are explored for their specific surface reactivity, Al3Ir is distinguished by its structural prevalence and well-documented stability profile, making it a reliable benchmark for studying intermetallic bonding behavior.
Related Compounds
Other Platinum-Group Alloy Catalysts in the database.
Data sources & attribution
- latticegraph — Lattice Graph Materials Intelligence Platform
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