CdCu2
CdCu2 is a metallic binary intermetallic compound known for its structural stability and potential for experimental synthesis.
About CdCu2
CdCu2 is a metallic intermetallic compound composed of cadmium and copper. As a near-hull phase, it demonstrates sufficient thermodynamic stability to be considered a viable candidate for experimental synthesis and characterization within materials science laboratories.
Its electronic character is defined by its metallic nature, lacking a band gap. Given its presence across multiple structural databases, it represents a well-documented system for researchers investigating binary alloys and the fundamental interactions between transition and post-transition metals.
Key Properties
Cross-validated computational properties for CdCu2, aggregated across 5 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 CdCu2, 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. |
|---|---|---|---|---|---|
| P63/mmc (No. 194) | hexagonal | 0.00 | 0.0099 | -13.923 | 9.23 |
| P63/mmc (No. 194) | hexagonal | 0.00 | 0.0125 | -13.920 | 9.24 |
| P6/mmm (No. 191) | — | — | — | — | — |
| P63/mmc (No. 194) | — | — | — | — | — |
| P63/mmc (No. 194) | Hexagonal | — | — | — | 9.38 |
| — | — | — | — | — | 6.48 |
| P63/mmc (No. 194) | Hexagonal | — | — | — | 8.92 |
| P63/mmc (No. 194) | Hexagonal | — | — | — | 9.25 |
| P63/mmc (No. 194) | Hexagonal | — | — | — | 9.24 |
| — | — | — | — | — | 6.48 |
| P63/mmc (No. 194) | Hexagonal | — | — | — | 8.92 |
| P63/mmc (No. 194) | Hexagonal | — | — | — | 9.35 |
Applications
Where CdCu2 is used.
Frequently Asked Questions
Common questions about CdCu2, answered from cross-validated data.
What is CdCu2?
CdCu2 is a metallic binary intermetallic compound known for its structural stability and potential for experimental synthesis.
What is CdCu2 used for?
What is the band gap of CdCu2?
Is CdCu2 a metal, semiconductor, or insulator?
Is CdCu2 thermodynamically stable?
What is the crystal structure of CdCu2?
What is the density of CdCu2?
How many polymorphs of CdCu2 are known?
What elements does CdCu2 contain?
Where does the data for CdCu2 come from?
How It Compares
As a binary intermetallic, CdCu2 serves as a representative example of how cadmium and copper can form stable, ordered phases. It functions as a foundational study in the broader class of metallic alloys, providing insights into the structural diversity possible when combining these specific elements.
Data sources & attribution
- materials_project — Data from the Materials Project. Cite: Jain et al., APL Materials 1, 011002 (2013).
- nomad — Data from NOMAD. Cite: Draxl & Scheffler, J. Phys. Mater. 2, 036001 (2019).
- jarvis — Data from JARVIS (NIST). Cite: Choudhary et al., npj Comp. Mater. 6, 173 (2020).
- mpaloe — Data from mpaloe.
- omat24 — Data from OMat24 (Meta FAIR). Cite: Barroso-Luque et al., arXiv 2410.12771 (2024).
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