Ag1Cd1Y2
Ag1Cd1Y2 is a semimetallic ternary intermetallic compound containing silver, cadmium, and yttrium that exists in a metastable state.
About Ag1Cd1Y2
Ag1Cd1Y2 is a complex ternary intermetallic compound composed of silver, cadmium, and yttrium. It exhibits a near-zero-gap electronic character, placing it in the category of semimetallic materials that often demonstrate unique charge carrier dynamics.
Due to its position above the thermodynamic hull, this compound is considered metastable under standard conditions. While it has been identified in multiple structural configurations, its synthesis and long-term stability remain subjects of interest for researchers investigating complex metallic phases.
Key Properties
Cross-validated computational properties for Ag1Cd1Y2, 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 Ag1Cd1Y2, 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 | 0.08 | 2.3954 | -2.120 | 0.48 |
| P4/mmm (No. 123) | — | — | — | — | — |
| Fm-3m (No. 225) | — | — | — | — | — |
| P4mm (No. 99) | — | — | — | — | — |
| P4/mmm (No. 123) | — | — | — | — | — |
| P2/m (No. 10) | — | — | — | — | — |
| F-43m (No. 216) | — | — | — | — | — |
| P4mm (No. 99) | — | — | — | — | — |
| Imm2 (No. 44) | — | — | — | — | — |
| Pmm2 (No. 25) | — | — | — | — | — |
| R-3m (No. 166) | — | — | — | — | — |
| P4/mmm (No. 123) | — | — | — | — | — |
Frequently Asked Questions
Common questions about Ag1Cd1Y2, answered from cross-validated data.
What is Ag1Cd1Y2?
Ag1Cd1Y2 is a semimetallic ternary intermetallic compound containing silver, cadmium, and yttrium that exists in a metastable state.
What is the band gap of Ag1Cd1Y2?
Is Ag1Cd1Y2 a metal, semiconductor, or insulator?
Is Ag1Cd1Y2 thermodynamically stable?
What is the crystal structure of Ag1Cd1Y2?
What is the density of Ag1Cd1Y2?
How many polymorphs of Ag1Cd1Y2 are known?
What elements does Ag1Cd1Y2 contain?
Where does the data for Ag1Cd1Y2 come from?
How It Compares
As a unique ternary phase, Ag1Cd1Y2 represents a specialized structural arrangement within the broader landscape of silver-cadmium-yttrium intermetallics, serving as a distinct example of how these elements combine into complex, potentially metastable lattice geometries.
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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