Ag1Au1Cu2
Ag1Au1Cu2 is a semiconducting ternary alloy of silver, gold, and copper that exists in a metastable state.
About Ag1Au1Cu2
Ag1Au1Cu2 is a complex ternary metallic compound incorporating silver, gold, and copper. As a semiconducting material, it represents a unique intersection of noble and transition metals, offering an intriguing electronic profile for fundamental materials research.
Despite its status as a metastable phase that sits above the thermodynamic hull, the compound has been documented in numerous structural configurations. This structural diversity highlights the intricate phase space of silver-gold-copper alloys and their potential for specialized electronic applications.
Key Properties
Cross-validated computational properties for Ag1Au1Cu2, 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 Ag1Au1Cu2, 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 | 0.13 | 1.6907 | -1.924 | 1.24 |
| Cm (No. 8) | — | — | — | — | — |
| I4/mmm (No. 139) | — | — | — | — | — |
| I-4m2 (No. 119) | — | — | — | — | — |
| C2/m (No. 12) | — | — | — | — | — |
| P4mm (No. 99) | — | — | — | — | — |
| P2/m (No. 10) | — | — | — | — | — |
| P4/mmm (No. 123) | — | — | — | — | — |
| P4/mmm (No. 123) | — | — | — | — | — |
| P4/mmm (No. 123) | — | — | — | — | — |
| F-43m (No. 216) | — | — | — | — | — |
| P4mm (No. 99) | — | — | — | — | — |
Applications
Where Ag1Au1Cu2 is used.
Frequently Asked Questions
Common questions about Ag1Au1Cu2, answered from cross-validated data.
What is Ag1Au1Cu2?
Ag1Au1Cu2 is a semiconducting ternary alloy of silver, gold, and copper that exists in a metastable state.
What is Ag1Au1Cu2 used for?
What is the band gap of Ag1Au1Cu2?
Is Ag1Au1Cu2 a metal, semiconductor, or insulator?
Is Ag1Au1Cu2 thermodynamically stable?
What is the crystal structure of Ag1Au1Cu2?
What is the density of Ag1Au1Cu2?
How many polymorphs of Ag1Au1Cu2 are known?
What elements does Ag1Au1Cu2 contain?
Where does the data for Ag1Au1Cu2 come from?
How It Compares
As a ternary alloy, Ag1Au1Cu2 occupies a distinct niche in materials science where the mixing of noble metals creates complex, often metastable, crystalline arrangements that differ significantly from simple binary systems.
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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