Cu1In1Y2
Cu1In1Y2 is a semiconducting intermetallic compound composed of copper, indium, and yttrium that exists in a metastable state.
About Cu1In1Y2
Cu1In1Y2 is a complex ternary intermetallic compound characterized by its semiconducting electronic nature. As a material with multiple reported structural configurations, it represents a subject of interest for researchers investigating the interplay between copper, indium, and yttrium in solid-state systems. Given its position above the thermodynamic hull, this compound is considered metastable, suggesting that its synthesis requires precise control over processing conditions. Its unique atomic arrangement makes it a candidate for fundamental studies into the electronic properties of rare-earth-containing semiconductors.
Key Properties
Cross-validated computational properties for Cu1In1Y2, 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 Cu1In1Y2, 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 | 2.5690 | -16.402 | 0.46 |
| P4/mmm (No. 123) | — | — | — | — | — |
| P4/mmm (No. 123) | — | — | — | — | — |
| Imm2 (No. 44) | — | — | — | — | — |
| P4mm (No. 99) | — | — | — | — | — |
| Pmm2 (No. 25) | — | — | — | — | — |
| P2/m (No. 10) | — | — | — | — | — |
| F-43m (No. 216) | — | — | — | — | — |
| Fm-3m (No. 225) | — | — | — | — | — |
| Cmmm (No. 65) | — | — | — | — | — |
| P4/mmm (No. 123) | — | — | — | — | — |
| Pm (No. 6) | — | — | — | — | — |
Applications
Where Cu1In1Y2 is used.
Frequently Asked Questions
Common questions about Cu1In1Y2, answered from cross-validated data.
What is Cu1In1Y2?
Cu1In1Y2 is a semiconducting intermetallic compound composed of copper, indium, and yttrium that exists in a metastable state.
What is Cu1In1Y2 used for?
What is the band gap of Cu1In1Y2?
Is Cu1In1Y2 a metal, semiconductor, or insulator?
Is Cu1In1Y2 thermodynamically stable?
What is the crystal structure of Cu1In1Y2?
What is the density of Cu1In1Y2?
How many polymorphs of Cu1In1Y2 are known?
What elements does Cu1In1Y2 contain?
Where does the data for Cu1In1Y2 come from?
How It Compares
As a unique ternary phase, Cu1In1Y2 occupies a specialized niche within intermetallic semiconducting materials, serving as a distinct structural variant that highlights the complexity of combining transition metals with yttrium.
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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