Al2FeRh
Al2FeRh is a semimetallic aluminide alloy containing iron and rhodium that serves as a potential candidate for specialized catalytic research.
About Al2FeRh
Al2FeRh is a complex intermetallic compound classified within the platinum-group alloy catalysts. Characterized by a near-zero-gap electronic structure, it functions as a semimetal, which influences its interaction with chemical reactants during surface processes. Its composition balances light aluminum with transition metals to create a unique electronic environment.
This material is considered near-hull in terms of thermodynamic stability, suggesting it is a viable candidate for experimental synthesis and characterization. With multiple reported structures across various databases, it represents a well-documented phase that bridges the gap between traditional noble metal catalysts and more abundant aluminide systems.
Key Properties
Cross-validated computational properties for Al2FeRh, 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 Al2FeRh is used.
Frequently Asked Questions
Common questions about Al2FeRh, answered from cross-validated data.
What is Al2FeRh?
Al2FeRh is a semimetallic aluminide alloy containing iron and rhodium that serves as a potential candidate for specialized catalytic research.
What is Al2FeRh used for?
What is the band gap of Al2FeRh?
Is Al2FeRh a metal, semiconductor, or insulator?
Is Al2FeRh thermodynamically stable?
How many polymorphs of Al2FeRh are known?
What elements does Al2FeRh contain?
Where does the data for Al2FeRh come from?
How It Compares
Within the platinum-group alloy catalysts class.
Within the diverse family of platinum-group alloy catalysts, Al2FeRh occupies a distinct niche compared to siblings like LaRh or Ga2Ru. While many members of this class are optimized for specific hydrogenation or oxidation pathways, Al2FeRh utilizes its semimetallic nature to offer a different electronic landscape for surface catalysis, distinguishing it from the more conventional metallic behavior found in compounds like BaPd.
Related Compounds
Other Platinum-Group Alloy Catalysts in the database.
Data sources & attribution
- latticegraph — Lattice Graph Materials Intelligence Platform
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