Ag1Au2Y1
Ag1Au2Y1 is a semiconducting ternary intermetallic compound containing silver, gold, and yttrium.
About Ag1Au2Y1
Ag1Au2Y1 is a ternary intermetallic compound composed of silver, gold, and yttrium. It exhibits semiconducting electronic characteristics, distinguishing it from typical metallic alloys in this chemical space.
Due to its position above the thermodynamic hull, this material is considered metastable. Its existence across multiple reported structures suggests it remains a subject of interest for researchers investigating complex phase stability in noble metal-rare earth systems.
Key Properties
Cross-validated computational properties for Ag1Au2Y1, 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 Ag1Au2Y1, 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 | 0.18 | 1.8248 | -34.585 | 0.89 |
| Pmm2 (No. 25) | — | — | — | — | — |
| P4/mmm (No. 123) | — | — | — | — | — |
| P4/mmm (No. 123) | — | — | — | — | — |
| I4/mmm (No. 139) | — | — | — | — | — |
| Fm-3m (No. 225) | — | — | — | — | — |
| F-43m (No. 216) | — | — | — | — | — |
| P4mm (No. 99) | — | — | — | — | — |
| P2/m (No. 10) | — | — | — | — | — |
| Imm2 (No. 44) | — | — | — | — | — |
| Pmmm (No. 47) | — | — | — | — | — |
| R-3m (No. 166) | — | — | — | — | — |
Frequently Asked Questions
Common questions about Ag1Au2Y1, answered from cross-validated data.
What is Ag1Au2Y1?
Ag1Au2Y1 is a semiconducting ternary intermetallic compound containing silver, gold, and yttrium.
What is the band gap of Ag1Au2Y1?
Is Ag1Au2Y1 a metal, semiconductor, or insulator?
Is Ag1Au2Y1 thermodynamically stable?
What is the crystal structure of Ag1Au2Y1?
What is the density of Ag1Au2Y1?
How many polymorphs of Ag1Au2Y1 are known?
What elements does Ag1Au2Y1 contain?
Where does the data for Ag1Au2Y1 come from?
How It Compares
As a unique ternary phase, Ag1Au2Y1 represents a specialized composition within the broader landscape of silver-gold-yttrium intermetallics, where it serves as a case study for understanding the structural complexity that arises when combining noble metals with reactive rare-earth elements.
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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