Al1Cu1Y2
Al1Cu1Y2 is a semiconducting ternary intermetallic compound containing aluminum, copper, and yttrium.
About Al1Cu1Y2
Al1Cu1Y2 is a ternary intermetallic compound composed of aluminum, copper, 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. It remains a subject of interest for researchers studying complex phase stability and the structural diversity of rare-earth-containing intermetallics.
Key Properties
Cross-validated computational properties for Al1Cu1Y2, 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 Al1Cu1Y2, 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 | 0.14 | 2.7343 | -12.187 | 0.42 |
| C2/m (No. 12) | — | — | — | — | — |
| I-4m2 (No. 119) | — | — | — | — | — |
| P4mm (No. 99) | — | — | — | — | — |
| F-43m (No. 216) | — | — | — | — | — |
| Imm2 (No. 44) | — | — | — | — | — |
| Amm2 (No. 38) | — | — | — | — | — |
| P4mm (No. 99) | — | — | — | — | — |
| P2/m (No. 10) | — | — | — | — | — |
| P4/mmm (No. 123) | — | — | — | — | — |
| P4mm (No. 99) | — | — | — | — | — |
| P4/mmm (No. 123) | — | — | — | — | — |
Frequently Asked Questions
Common questions about Al1Cu1Y2, answered from cross-validated data.
What is Al1Cu1Y2?
Al1Cu1Y2 is a semiconducting ternary intermetallic compound containing aluminum, copper, and yttrium.
What is the band gap of Al1Cu1Y2?
Is Al1Cu1Y2 a metal, semiconductor, or insulator?
Is Al1Cu1Y2 thermodynamically stable?
What is the crystal structure of Al1Cu1Y2?
What is the density of Al1Cu1Y2?
How many polymorphs of Al1Cu1Y2 are known?
What elements does Al1Cu1Y2 contain?
Where does the data for Al1Cu1Y2 come from?
How It Compares
As a unique ternary phase, Al1Cu1Y2 represents a specific structural configuration within the aluminum-copper-yttrium system. While it lacks direct siblings in this specific classification, it serves as a valuable case study for understanding how the inclusion of yttrium influences the electronic behavior of transition metal-aluminides.
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).
Analyze Al1Cu1Y2 in the Lattice Graph platform
Polymorph comparison, confidence scoring, supply-chain risk, and patent monitoring — across 53 integrated data sources.
Explore the Platform →