MgCd
MgCd is a thermodynamically stable semiconducting intermetallic compound formed from magnesium and cadmium.
About MgCd
MgCd is a thermodynamically stable intermetallic compound that resides on the convex hull, indicating robust structural integrity. As a semiconducting material, it occupies a unique niche in solid-state physics where its electronic properties are governed by the interaction between magnesium and cadmium atoms. Its stability makes it a reliable candidate for fundamental studies in phase formation and electronic behavior. The compound is characterized by a high degree of structural diversity, as evidenced by the numerous reported configurations found in materials databases. This extensive structural data highlights its significance in understanding how metallic systems can exhibit semiconducting characteristics.
Key Properties
Cross-validated computational properties for MgCd, 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.
Reported Structures
Lowest-energy structures reported for MgCd, 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. |
|---|---|---|---|---|---|
| Pmma (No. 51) | orthorhombic | 0.00 | 0.0000 | -1.390 | 5.43 |
| P4/mmm (No. 123) | tetragonal | 0.00 | 0.0157 | -1.374 | 5.39 |
| Amm2 (No. 38) | orthorhombic | 0.00 | 0.0294 | -1.361 | 5.39 |
| Pm-3m (No. 221) | cubic | 0.00 | 0.0308 | -1.359 | 5.42 |
| Amm2 (No. 38) | orthorhombic | 0.00 | 0.0353 | -1.355 | 5.41 |
| C2 (No. 5) | monoclinic | 0.00 | 0.0360 | -1.354 | 5.37 |
| C2/m (No. 12) | monoclinic | 0.00 | 0.0382 | -1.352 | 5.34 |
| Cm (No. 8) | monoclinic | 0.00 | 0.0439 | -1.346 | 5.34 |
| Pmmn (No. 59) | orthorhombic | 0.00 | 0.0456 | -1.344 | 5.32 |
| Cm (No. 8) | monoclinic | 0.00 | 0.0469 | -1.343 | 5.34 |
| P-6m2 (No. 187) | hexagonal | 0.00 | 0.0553 | -1.335 | 5.29 |
| Amm2 (No. 38) | orthorhombic | 0.63 | 0.0600 | -1.330 | 5.30 |
Applications
Where MgCd is used.
Frequently Asked Questions
Common questions about MgCd, answered from cross-validated data.
What is MgCd?
MgCd is a thermodynamically stable semiconducting intermetallic compound formed from magnesium and cadmium.
What is MgCd used for?
What is the band gap of MgCd?
Is MgCd a metal, semiconductor, or insulator?
Is MgCd thermodynamically stable?
What is the crystal structure of MgCd?
What is the density of MgCd?
How many polymorphs of MgCd are known?
What elements does MgCd contain?
Where does the data for MgCd come from?
How It Compares
As a distinct intermetallic phase, MgCd represents a well-defined point of stability within the broader landscape of magnesium-cadmium binary systems, serving as a key reference for researchers investigating the transition between metallic and semiconducting behaviors in alloyed structures.
Data sources & attribution
- materials_project — Data from the Materials Project. Cite: Jain et al., APL Materials 1, 011002 (2013).
- mpaloe — Data from mpaloe.
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