CdMgTe2
CdMgTe2 is a semiconducting ternary compound that is considered a promising candidate for experimental synthesis and electronic material development.
About CdMgTe2
CdMgTe2 is a ternary semiconducting material composed of cadmium, magnesium, and tellurium. Its electronic character positions it as a candidate for specialized optoelectronic or semiconductor research where precise band engineering is required. As a near-hull phase, this compound is considered thermodynamically accessible for synthesis. Its structural versatility is evidenced by the significant number of reported configurations across various materials databases, suggesting a complex landscape for potential material development.
Key Properties
Cross-validated computational properties for CdMgTe2, aggregated across 4 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.
Cross-Source DFT Agreement
How well independent DFT databases agree on the thermodynamics of CdMgTe2. Tight agreement means computed properties can be trusted without re-running calculations.
Only 1 independent DFT source (materials_project) reports a hull energy for CdMgTe2, so cross-source agreement can't be assessed yet.
Reported Structures
Lowest-energy structures reported for CdMgTe2, 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. |
|---|---|---|---|---|---|
| P-4m2 (No. 115) | tetragonal | 1.99 | 0.0026 | -3.078 | 4.71 |
| I-42d (No. 122) | tetragonal | 2.09 | 0.0029 | -3.078 | 4.71 |
| R3m (No. 160) | trigonal | 1.83 | 0.0055 | -3.075 | 4.71 |
| P4/mmm (No. 123) | tetragonal | — | — | — | 6.18 |
| Cmm2 (No. 35) | orthorhombic | — | — | — | 5.89 |
| Pnma (No. 62) | orthorhombic | — | — | — | 5.28 |
| Immm (No. 71) | orthorhombic | — | — | — | 5.26 |
| P-4m2 (No. 115) | tetragonal | — | — | — | 4.61 |
| I-4m2 (No. 119) | tetragonal | — | — | — | 4.37 |
| F-43m (No. 216) | cubic | — | — | — | 4.64 |
| Pnma (No. 62) | orthorhombic | — | — | — | 5.34 |
| P4/mmm (No. 123) | tetragonal | — | — | — | 5.85 |
Applications
Where CdMgTe2 is used.
Frequently Asked Questions
Common questions about CdMgTe2, answered from cross-validated data.
What is CdMgTe2?
CdMgTe2 is a semiconducting ternary compound that is considered a promising candidate for experimental synthesis and electronic material development.
What is CdMgTe2 used for?
What is the band gap of CdMgTe2?
Is CdMgTe2 a metal, semiconductor, or insulator?
Is CdMgTe2 thermodynamically stable?
What is the crystal structure of CdMgTe2?
What is the density of CdMgTe2?
How many polymorphs of CdMgTe2 are known?
What elements does CdMgTe2 contain?
Where does the data for CdMgTe2 come from?
How It Compares
As a unique ternary phase, CdMgTe2 represents an exploratory frontier in semiconductor materials science. Without direct analogs in this specific grouping, it serves as a distinct case study for how the integration of magnesium into a cadmium-telluride framework influences lattice stability and electronic behavior compared to more conventional binary chalcogenides.
Data sources & attribution
- materials_project — Data from the Materials Project (materialsproject.org). Cite: Jain et al., APL Materials 1, 011002 (2013). (CC-BY-4.0)
- alexandria — Data from Alexandria. Cite: Schmidt et al., npj Comput. Mater. 10, 200 (2024). (CC-BY-4.0)
- cod — Data from the Crystallography Open Database (crystallography.net/cod/). Cite: Grazulis et al., J. Appl. Cryst. 42, 726 (2009). (CC0-1.0)
- nomad — Data from NOMAD (nomad-lab.eu). Cite: Draxl & Scheffler, J. Phys. Mater. 2, 036001 (2019). (CC-BY-4.0)
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