CdPbY2
CdPbY2 is a semiconducting ternary compound consisting of cadmium, lead, and yttrium that is currently studied for its structural diversity.
About CdPbY2
CdPbY2 is a complex ternary compound composed of cadmium, lead, and yttrium. As a semiconducting material, it represents an interesting subject for solid-state research, particularly in the exploration of heavy-metal-based electronic systems.
While the compound has been identified across multiple structural configurations in databases, it is characterized as being thermodynamically above the hull. This suggests that the material may be metastable or difficult to synthesize in a pure, stable form under standard conditions.
Key Properties
Cross-validated computational properties for CdPbY2, aggregated across 3 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 CdPbY2, 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 | 0.15 | 2.3140 | -2.568 | 0.56 |
| — | — | — | — | — | 7.63 |
| P4/mmm (No. 123) | — | — | — | — | — |
Frequently Asked Questions
Common questions about CdPbY2, answered from cross-validated data.
What is CdPbY2?
CdPbY2 is a semiconducting ternary compound consisting of cadmium, lead, and yttrium that is currently studied for its structural diversity.
What is the band gap of CdPbY2?
Is CdPbY2 a metal, semiconductor, or insulator?
Is CdPbY2 thermodynamically stable?
What is the crystal structure of CdPbY2?
What is the density of CdPbY2?
How many polymorphs of CdPbY2 are known?
What elements does CdPbY2 contain?
Where does the data for CdPbY2 come from?
How It Compares
As a unique ternary system, CdPbY2 occupies a specialized niche in materials science. Without direct structural siblings in this specific chemical family, it serves as an exploratory case study for how heavy elements like cadmium and lead interact within a yttrium-based lattice to influence semiconducting behavior.
Data sources & attribution
- materials_project — Data from the Materials Project. Cite: Jain et al., APL Materials 1, 011002 (2013).
- omat24 — Data from OMat24 (Meta FAIR). Cite: Barroso-Luque et al., arXiv 2410.12771 (2024).
- nomad — Data from NOMAD. Cite: Draxl & Scheffler, J. Phys. Mater. 2, 036001 (2019).
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