Ag1Ir1Zn2
Ag1Ir1Zn2 is a semiconducting ternary alloy containing silver, iridium, and zinc that serves as a specialized subject in platinum-group catalyst research.
About Ag1Ir1Zn2
Ag1Ir1Zn2 is a complex ternary alloy categorized within the platinum-group metal family. It exhibits semiconducting electronic behavior, which distinguishes it from the typical metallic nature of many related noble metal alloys. Its structural configuration has been captured across multiple database entries, highlighting significant interest in its atomic arrangement despite its complex nature.
As a material that sits above the thermodynamic hull, this compound is considered metastable. Its existence in structural databases suggests that while it may not be the most stable phase under ambient conditions, it remains a subject of investigation for researchers exploring specialized catalytic environments where unique electronic properties are required.
Key Properties
Cross-validated computational properties for Ag1Ir1Zn2, 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 Ag1Ir1Zn2, 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 | 0.32 | 1.9445 | -21.126 | 0.87 |
| P4/mmm (No. 123) | — | — | — | — | — |
| P4/mmm (No. 123) | — | — | — | — | — |
| F-43m (No. 216) | — | — | — | — | — |
| C2/m (No. 12) | — | — | — | — | — |
| Cmm2 (No. 35) | — | — | — | — | — |
| P4/mmm (No. 123) | — | — | — | — | — |
| I-4m2 (No. 119) | — | — | — | — | — |
| Fm-3m (No. 225) | — | — | — | — | — |
| I4/mmm (No. 139) | — | — | — | — | — |
| Pmm2 (No. 25) | — | — | — | — | — |
| Imm2 (No. 44) | — | — | — | — | — |
Applications
Where Ag1Ir1Zn2 is used.
Frequently Asked Questions
Common questions about Ag1Ir1Zn2, answered from cross-validated data.
What is Ag1Ir1Zn2?
Ag1Ir1Zn2 is a semiconducting ternary alloy containing silver, iridium, and zinc that serves as a specialized subject in platinum-group catalyst research.
What is Ag1Ir1Zn2 used for?
What is the band gap of Ag1Ir1Zn2?
Is Ag1Ir1Zn2 a metal, semiconductor, or insulator?
Is Ag1Ir1Zn2 thermodynamically stable?
What is the crystal structure of Ag1Ir1Zn2?
What is the density of Ag1Ir1Zn2?
How many polymorphs of Ag1Ir1Zn2 are known?
What elements does Ag1Ir1Zn2 contain?
Where does the data for Ag1Ir1Zn2 come from?
How It Compares
Within the platinum-group alloy catalysts class.
Unlike many of its platinum-group counterparts such as As2Ir or P3Ru, which often exhibit robust metallic conductivity and high thermodynamic stability, Ag1Ir1Zn2 is characterized by its semiconducting electronic profile and metastable status. While siblings like Ga2Ru or GeRu are frequently studied for their stable intermetallic frameworks, Ag1Ir1Zn2 represents a more specialized, potentially unstable phase that offers a different electronic landscape for catalytic applications.
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).
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