Cd1Hg2Mg1
Cd1Hg2Mg1 is a semiconducting ternary intermetallic compound that exists as a metastable phase.
About Cd1Hg2Mg1
Cd1Hg2Mg1 is a ternary intermetallic compound characterized by its semiconducting electronic nature. Its unique combination of cadmium, mercury, and magnesium elements places it within a specialized group of materials that are frequently investigated for their complex structural arrangements.
Despite its existence in reported databases, the compound is categorized as being above the thermodynamic hull, suggesting it is a metastable phase. This status makes it a compelling subject for researchers studying high-pressure synthesis or non-equilibrium processing techniques to stabilize such complex intermetallic structures.
Key Properties
Cross-validated computational properties for Cd1Hg2Mg1, 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 Cd1Hg2Mg1, 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 | 1.38 | 0.6910 | -0.210 | 0.66 |
| Imm2 (No. 44) | — | — | — | — | — |
| Fm-3m (No. 225) | — | — | — | — | — |
| P4/mmm (No. 123) | — | — | — | — | — |
| P2/m (No. 10) | — | — | — | — | — |
| R3m (No. 160) | — | — | — | — | — |
| Pmmm (No. 47) | — | — | — | — | — |
| C2/m (No. 12) | — | — | — | — | — |
| P2/m (No. 10) | — | — | — | — | — |
| I4/mmm (No. 139) | — | — | — | — | — |
| Cm (No. 8) | — | — | — | — | — |
| Cmm2 (No. 35) | — | — | — | — | — |
Applications
Where Cd1Hg2Mg1 is used.
Frequently Asked Questions
Common questions about Cd1Hg2Mg1, answered from cross-validated data.
What is Cd1Hg2Mg1?
Cd1Hg2Mg1 is a semiconducting ternary intermetallic compound that exists as a metastable phase.
What is Cd1Hg2Mg1 used for?
What is the band gap of Cd1Hg2Mg1?
Is Cd1Hg2Mg1 a metal, semiconductor, or insulator?
Is Cd1Hg2Mg1 thermodynamically stable?
What is the crystal structure of Cd1Hg2Mg1?
What is the density of Cd1Hg2Mg1?
How many polymorphs of Cd1Hg2Mg1 are known?
What elements does Cd1Hg2Mg1 contain?
Where does the data for Cd1Hg2Mg1 come from?
How It Compares
As a member of a niche class of ternary intermetallics, Cd1Hg2Mg1 serves as an important case study for understanding the structural diversity of mercury-containing alloys. It represents a specific point in the compositional space where semiconducting behavior emerges, distinguishing it from more common metallic or highly conductive phases found in similar alloy systems.
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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