HfIr3
HfIr3 is a thermodynamically stable metallic alloy composed of hafnium and iridium, primarily utilized in advanced catalytic applications.

About HfIr3
HfIr3 is a metallic intermetallic compound belonging to the platinum-group alloy catalyst family. Its thermodynamic stability on the convex hull makes it a robust candidate for applications requiring structural integrity under demanding conditions. The material exhibits characteristic metallic conductivity, typical of its class, which is essential for efficient charge transfer in catalytic processes. Due to its high structural diversity, it remains a subject of significant interest in materials science research. This compound is primarily utilized in advanced catalysis, where the synergy between hafnium and iridium provides unique surface reactivity. Its stable crystalline framework allows it to maintain performance in environments where other metallic phases might degrade. By leveraging the properties of platinum-group elements, HfIr3 serves as a specialized component in high-performance chemical synthesis and electrochemical systems.
Key Properties
Cross-validated computational properties for HfIr3, 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 HfIr3 is used.
Frequently Asked Questions
Common questions about HfIr3, answered from cross-validated data.
What is HfIr3?
HfIr3 is a thermodynamically stable metallic alloy composed of hafnium and iridium, primarily utilized in advanced catalytic applications.
What is HfIr3 used for?
What is the band gap of HfIr3?
Is HfIr3 a metal, semiconductor, or insulator?
Is HfIr3 thermodynamically stable?
How many polymorphs of HfIr3 are known?
What elements does HfIr3 contain?
Where does the data for HfIr3 come from?
How It Compares
Within the platinum-group alloy catalysts class.
Within the diverse family of platinum-group alloys, HfIr3 stands out for its thermodynamic stability compared to more complex phases like As2Ir or Ga2Ru. While many members of this class are explored for their specific electronic tuning, HfIr3 provides a reliably stable metallic platform that contrasts with the varied stoichiometric complexity seen in compounds such as GeRu or BaPd.
Related Compounds
Other Platinum-Group Alloy Catalysts in the database.
Data sources & attribution
- latticegraph — Lattice Graph Materials Intelligence Platform
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