Ga1Hg1Mg2
Ga1Hg1Mg2 is a semimetallic ternary intermetallic compound composed of gallium, mercury, and magnesium that exhibits structural complexity.
About Ga1Hg1Mg2
Ga1Hg1Mg2 is a ternary intermetallic compound composed of gallium, mercury, and magnesium. Its electronic structure exhibits near-zero-gap characteristics, placing it within the category of semimetallic materials that often demonstrate interesting transport properties.
Due to its position relative to the thermodynamic stability hull, this compound is considered metastable. The existence of numerous reported structural variants suggests a complex energy landscape that warrants further investigation into its synthesis and phase stability.
Key Properties
Cross-validated computational properties for Ga1Hg1Mg2, 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 Ga1Hg1Mg2, 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 | 0.07 | 1.2520 | -0.566 | 0.54 |
| F-43m (No. 216) | — | — | — | — | — |
| Pmmm (No. 47) | — | — | — | — | — |
| I4/mmm (No. 139) | — | — | — | — | — |
| Cmmm (No. 65) | — | — | — | — | — |
| C2/m (No. 12) | — | — | — | — | — |
| I4/mmm (No. 139) | — | — | — | — | — |
| P4/mmm (No. 123) | — | — | — | — | — |
| P4/mmm (No. 123) | — | — | — | — | — |
| I-4m2 (No. 119) | — | — | — | — | — |
| P4mm (No. 99) | — | — | — | — | — |
| P2/m (No. 10) | — | — | — | — | — |
Frequently Asked Questions
Common questions about Ga1Hg1Mg2, answered from cross-validated data.
What is Ga1Hg1Mg2?
Ga1Hg1Mg2 is a semimetallic ternary intermetallic compound composed of gallium, mercury, and magnesium that exhibits structural complexity.
What is the band gap of Ga1Hg1Mg2?
Is Ga1Hg1Mg2 a metal, semiconductor, or insulator?
Is Ga1Hg1Mg2 thermodynamically stable?
What is the crystal structure of Ga1Hg1Mg2?
What is the density of Ga1Hg1Mg2?
How many polymorphs of Ga1Hg1Mg2 are known?
What elements does Ga1Hg1Mg2 contain?
Where does the data for Ga1Hg1Mg2 come from?
How It Compares
As a ternary intermetallic phase, Ga1Hg1Mg2 occupies a specialized niche in materials science. Without direct structural siblings to compare it against, it serves as a representative example of how combining post-transition metals with alkaline earth elements can yield diverse, albeit often metastable, atomic arrangements.
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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