Cd1Hg1Mg2
Cd1Hg1Mg2 is a semimetallic intermetallic compound composed of cadmium, mercury, and magnesium that is considered potentially synthesizable.
About Cd1Hg1Mg2
Cd1Hg1Mg2 is a complex intermetallic compound composed of cadmium, mercury, and magnesium. Its electronic structure exhibits near-zero-gap characteristics, placing it in the category of semimetallic materials that often bridge the gap between insulating and conductive behaviors.
This compound is recognized for its proximity to the thermodynamic hull, suggesting it is a viable candidate for experimental synthesis. With a significant number of reported structural configurations, it remains a subject of interest for researchers investigating the phase stability of multicomponent magnesium-based alloys.
Key Properties
Cross-validated computational properties for Cd1Hg1Mg2, 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 Cd1Hg1Mg2, 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 | 0.0238 | -1.256 | 7.06 |
| Immm (No. 71) | orthorhombic | 0.06 | 1.0553 | -0.225 | 0.52 |
| P2/m (No. 10) | — | — | — | — | — |
| F-43m (No. 216) | — | — | — | — | — |
| Fm-3m (No. 225) | — | — | — | — | — |
| P4/mmm (No. 123) | — | — | — | — | — |
| I4/mmm (No. 139) | — | — | — | — | — |
| Pmm2 (No. 25) | — | — | — | — | — |
| I-4m2 (No. 119) | — | — | — | — | — |
| P4/mmm (No. 123) | — | — | — | — | — |
| R-3m (No. 166) | — | — | — | — | — |
| P4mm (No. 99) | — | — | — | — | — |
Applications
Where Cd1Hg1Mg2 is used.
Frequently Asked Questions
Common questions about Cd1Hg1Mg2, answered from cross-validated data.
What is Cd1Hg1Mg2?
Cd1Hg1Mg2 is a semimetallic intermetallic compound composed of cadmium, mercury, and magnesium that is considered potentially synthesizable.
What is Cd1Hg1Mg2 used for?
What is the band gap of Cd1Hg1Mg2?
Is Cd1Hg1Mg2 a metal, semiconductor, or insulator?
Is Cd1Hg1Mg2 thermodynamically stable?
What is the crystal structure of Cd1Hg1Mg2?
What is the density of Cd1Hg1Mg2?
How many polymorphs of Cd1Hg1Mg2 are known?
What elements does Cd1Hg1Mg2 contain?
Where does the data for Cd1Hg1Mg2 come from?
How It Compares
As a unique intermetallic phase, Cd1Hg1Mg2 represents a specialized structural arrangement within the broader landscape of mercury-cadmium-magnesium systems, serving as a key reference point for understanding how these elements interact to form stable, semimetallic electronic environments.
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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