Ge2Mg4
Ge2Mg4 is a stable semiconducting intermetallic compound formed from germanium and magnesium.
About Ge2Mg4
Ge2Mg4 is a semiconducting intermetallic compound composed of germanium and magnesium. As a thermodynamically stable phase residing on the convex hull, it represents a robust structural configuration within its chemical system. Its electronic character suggests potential utility in specialized semiconductor applications where specific band structures are required. The material is characterized by a significant degree of structural diversity, as evidenced by numerous reported configurations across major materials databases. This wealth of structural data underscores its importance for researchers investigating the fundamental properties of binary magnesium-germanium systems. By providing a stable platform for electronic study, it serves as a key subject for understanding phase stability and semiconductor behavior in metal-rich alloys.
Key Properties
Cross-validated computational properties for Ge2Mg4, 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 Ge2Mg4, 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 | 0.17 | 0.0000 | -7.747 | 3.12 |
| P63/mmc (No. 194) | hexagonal | 0.00 | 0.1528 | -7.595 | 3.40 |
| Fd-3m (No. 227) | cubic | 0.00 | 0.4832 | -7.264 | 3.08 |
| P63/mmc (No. 194) | — | — | — | — | — |
| I4/mcm (No. 140) | — | — | — | — | — |
| Cm (No. 8) | — | — | — | — | — |
| Fd-3m (No. 227) | — | — | — | — | — |
| P63/mmc (No. 194) | — | — | — | — | — |
| C2/m (No. 12) | — | — | — | — | — |
| Fm-3m (No. 225) | — | — | — | — | — |
| I4/mcm (No. 140) | — | — | — | — | — |
| Cmcm (No. 63) | — | — | — | — | — |
Applications
Where Ge2Mg4 is used.
Frequently Asked Questions
Common questions about Ge2Mg4, answered from cross-validated data.
What is Ge2Mg4?
Ge2Mg4 is a stable semiconducting intermetallic compound formed from germanium and magnesium.
What is Ge2Mg4 used for?
What is the band gap of Ge2Mg4?
Is Ge2Mg4 a metal, semiconductor, or insulator?
Is Ge2Mg4 thermodynamically stable?
What is the crystal structure of Ge2Mg4?
What is the density of Ge2Mg4?
How many polymorphs of Ge2Mg4 are known?
What elements does Ge2Mg4 contain?
Where does the data for Ge2Mg4 come from?
How It Compares
As a thermodynamically stable binary compound, Ge2Mg4 serves as a foundational reference point for understanding the phase space of magnesium-germanium alloys, representing a well-defined structural state in its class.
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).
- nomad — Data from NOMAD. Cite: Draxl & Scheffler, J. Phys. Mater. 2, 036001 (2019).
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