CdCu3
CdCu3 is a metastable metallic intermetallic compound formed from cadmium and copper.

About CdCu3
CdCu3 is a metallic intermetallic compound composed of cadmium and copper. As a metastable phase, it represents a unique configuration of these elements that is of significant interest for fundamental studies in solid-state chemistry and phase stability.
Its metallic nature suggests high electrical and thermal conductivity, typical of copper-rich alloys. The compound is characterized by a diverse range of reported structures, highlighting its complex behavior under varying synthesis conditions and its potential for specialized metallurgical applications.
Key Properties
Cross-validated computational properties for CdCu3, 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 CdCu3, 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. |
|---|---|---|---|---|---|
| Pm-3m (No. 221) | cubic | 0.00 | 0.0801 | -13.081 | 8.99 |
| Cmmm (No. 65) | — | — | — | — | — |
| Pm-3m (No. 221) | Cubic | — | — | — | 9.25 |
| Pm-3m (No. 221) | Cubic | — | — | — | 8.99 |
| Pm-3m (No. 221) | Cubic | — | — | — | 9.40 |
| — | — | — | — | — | 8.71 |
| Pm-3m (No. 221) | — | — | — | — | — |
Applications
Where CdCu3 is used.
Frequently Asked Questions
Common questions about CdCu3, answered from cross-validated data.
What is CdCu3?
CdCu3 is a metastable metallic intermetallic compound formed from cadmium and copper.
What is CdCu3 used for?
What is the band gap of CdCu3?
Is CdCu3 a metal, semiconductor, or insulator?
Is CdCu3 thermodynamically stable?
What is the crystal structure of CdCu3?
What is the density of CdCu3?
How many polymorphs of CdCu3 are known?
What elements does CdCu3 contain?
Where does the data for CdCu3 come from?
How It Compares
As a distinct intermetallic phase, CdCu3 occupies a specialized niche within copper-based alloy systems. While it lacks direct structural siblings in this context, its metastability distinguishes it from more common, highly stable copper-cadmium intermetallics, making it a subject of interest for researchers investigating non-equilibrium material states.
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).
- mpaloe — Data from mpaloe.
- omat24 — Data from OMat24 (Meta FAIR). Cite: Barroso-Luque et al., arXiv 2410.12771 (2024).
- jarvis — Data from JARVIS (NIST). Cite: Choudhary et al., npj Comp. Mater. 6, 173 (2020).
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