Cd1Pd1Y2
Cd1Pd1Y2 is a semimetallic intermetallic alloy composed of cadmium, palladium, and yttrium that is primarily studied for its structural complexity and electronic properties.
About Cd1Pd1Y2
Cd1Pd1Y2 is a complex intermetallic compound belonging to the platinum-group alloy catalyst class. Characterized by a near-zero-gap electronic structure, this material exhibits semimetallic behavior that is of significant interest for fundamental studies in condensed matter physics and catalysis. Its unique composition of cadmium, palladium, and yttrium positions it as a specialized candidate for exploring electronic tuning in multi-component metallic systems.
While this compound is currently classified as thermodynamically unstable relative to its constituent elements, its structural diversity is highlighted by numerous reported configurations in crystallographic databases. This data richness suggests that while it may be difficult to synthesize in a bulk stable form, it remains a valuable subject for investigating metastable phases and potential catalytic pathways in high-performance alloy research.
Key Properties
Cross-validated computational properties for Cd1Pd1Y2, 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 Cd1Pd1Y2, 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 | 0.05 | 2.4382 | -2.954 | 0.50 |
| Cmmm (No. 65) | — | — | — | — | — |
| Fm-3m (No. 225) | — | — | — | — | — |
| P4/mmm (No. 123) | — | — | — | — | — |
| P4/mmm (No. 123) | — | — | — | — | — |
| P4mm (No. 99) | — | — | — | — | — |
| I-4m2 (No. 119) | — | — | — | — | — |
| P4/mmm (No. 123) | — | — | — | — | — |
| P4mm (No. 99) | — | — | — | — | — |
| P4mm (No. 99) | — | — | — | — | — |
| Pmmm (No. 47) | — | — | — | — | — |
| P4/mmm (No. 123) | — | — | — | — | — |
Applications
Where Cd1Pd1Y2 is used.
Frequently Asked Questions
Common questions about Cd1Pd1Y2, answered from cross-validated data.
What is Cd1Pd1Y2?
Cd1Pd1Y2 is a semimetallic intermetallic alloy composed of cadmium, palladium, and yttrium that is primarily studied for its structural complexity and electronic properties.
What is Cd1Pd1Y2 used for?
What is the band gap of Cd1Pd1Y2?
Is Cd1Pd1Y2 a metal, semiconductor, or insulator?
Is Cd1Pd1Y2 thermodynamically stable?
What is the crystal structure of Cd1Pd1Y2?
What is the density of Cd1Pd1Y2?
How many polymorphs of Cd1Pd1Y2 are known?
What elements does Cd1Pd1Y2 contain?
Where does the data for Cd1Pd1Y2 come from?
How It Compares
Within the platinum-group alloy catalysts class.
Within the broader family of platinum-group alloys, Cd1Pd1Y2 occupies a niche position compared to more stable, well-characterized members like BaPd or GeRu. While many of its siblings exhibit robust thermodynamic stability and well-defined catalytic applications, Cd1Pd1Y2 represents a more challenging, metastable phase that requires precise control for synthesis, distinguishing it from the more conventional intermetallics in this class.
Related Compounds
Other Platinum-Group Alloy Catalysts in the database.
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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