Mg1Pb2Sr1
Mg1Pb2Sr1 is a semiconducting ternary intermetallic compound that exhibits structural complexity and thermodynamic metastability.
About Mg1Pb2Sr1
Mg1Pb2Sr1 is a ternary intermetallic compound characterized by its semiconducting electronic nature. Its composition reflects a complex arrangement of magnesium, lead, and strontium atoms, which contributes to its unique structural landscape.
While this material has been documented across multiple structural configurations, it is identified as being thermodynamically unstable relative to its decomposition products. This metastability makes it an intriguing subject for fundamental studies in solid-state chemistry and materials design.
Key Properties
Cross-validated computational properties for Mg1Pb2Sr1, 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 Mg1Pb2Sr1, 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 | 0.42 | 1.5019 | -1.519 | 0.55 |
| P2/m (No. 10) | — | — | — | — | — |
| Imm2 (No. 44) | — | — | — | — | — |
| P2/m (No. 10) | — | — | — | — | — |
| P4mm (No. 99) | — | — | — | — | — |
| P4/mmm (No. 123) | — | — | — | — | — |
| C2/m (No. 12) | — | — | — | — | — |
| P4/mmm (No. 123) | — | — | — | — | — |
| Pm (No. 6) | — | — | — | — | — |
| Cmmm (No. 65) | — | — | — | — | — |
| Cm (No. 8) | — | — | — | — | — |
| Pmm2 (No. 25) | — | — | — | — | — |
Frequently Asked Questions
Common questions about Mg1Pb2Sr1, answered from cross-validated data.
What is Mg1Pb2Sr1?
Mg1Pb2Sr1 is a semiconducting ternary intermetallic compound that exhibits structural complexity and thermodynamic metastability.
What is the band gap of Mg1Pb2Sr1?
Is Mg1Pb2Sr1 a metal, semiconductor, or insulator?
Is Mg1Pb2Sr1 thermodynamically stable?
What is the crystal structure of Mg1Pb2Sr1?
What is the density of Mg1Pb2Sr1?
How many polymorphs of Mg1Pb2Sr1 are known?
What elements does Mg1Pb2Sr1 contain?
Where does the data for Mg1Pb2Sr1 come from?
How It Compares
As a unique ternary phase, Mg1Pb2Sr1 represents a specialized composition within the broader landscape of magnesium-lead-strontium intermetallics. Unlike more robust binary systems, its structural complexity and thermodynamic position highlight the challenges in stabilizing specific stoichiometric ratios in this chemical space.
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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