CdHgLa2
CdHgLa2 is a semimetallic intermetallic compound containing cadmium, mercury, and lanthanum that is considered potentially synthesizable.
About CdHgLa2
CdHgLa2 is a complex intermetallic compound composed of cadmium, mercury, and lanthanum. Its electronic structure is characterized as a near-zero-gap semimetal, placing it in a unique regime where conduction and valence bands meet, which is often of interest for studying exotic electronic phenomena.
Positioned near the thermodynamic hull, this material is considered a viable candidate for experimental synthesis. Given its presence in multiple structural databases, it represents a significant subject for researchers investigating the interplay of heavy elements and rare-earth components in solid-state chemistry.
Key Properties
Cross-validated computational properties for CdHgLa2, 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 CdHgLa2, 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. |
|---|---|---|---|---|---|
| Fm-3m (No. 225) | cubic | 0.00 | 0.0122 | -3.175 | 8.21 |
| Immm (No. 71) | orthorhombic | 0.04 | 2.2133 | -0.974 | 0.77 |
| — | — | — | — | — | 8.13 |
| — | — | — | — | — | — |
| — | — | — | — | — | 8.13 |
Applications
Where CdHgLa2 is used.
Frequently Asked Questions
Common questions about CdHgLa2, answered from cross-validated data.
What is CdHgLa2?
CdHgLa2 is a semimetallic intermetallic compound containing cadmium, mercury, and lanthanum that is considered potentially synthesizable.
What is CdHgLa2 used for?
What is the band gap of CdHgLa2?
Is CdHgLa2 a metal, semiconductor, or insulator?
Is CdHgLa2 thermodynamically stable?
What is the crystal structure of CdHgLa2?
What is the density of CdHgLa2?
How many polymorphs of CdHgLa2 are known?
What elements does CdHgLa2 contain?
Where does the data for CdHgLa2 come from?
How It Compares
As a specialized ternary intermetallic, CdHgLa2 occupies a distinct niche in materials science. Unlike simpler binary alloys, this compound leverages the heavy-atom interactions of mercury and the electronic contributions of lanthanum to achieve its semimetallic character, serving as a foundational example of complex phase stability in this specific chemical family.
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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