MgPbSr2
MgPbSr2 is a semimetallic ternary intermetallic compound composed of magnesium, lead, and strontium that is typically found in a metastable state.
About MgPbSr2
MgPbSr2 is a complex ternary intermetallic compound composed of magnesium, lead, and strontium. It exhibits a semimetallic electronic character, placing it in a unique regime where its electrical properties are highly sensitive to its specific atomic arrangement.
Given its position above the thermodynamic hull, this material is considered metastable or unstable under standard conditions. Despite this, the compound has been documented across multiple structural databases, highlighting its significance in fundamental studies of ternary systems and phase stability.
Key Properties
Cross-validated computational properties for MgPbSr2, 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 MgPbSr2, 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 | 0.01 | 1.6267 | -0.959 | 0.36 |
| — | — | — | — | — | — |
| — | — | — | — | — | 4.73 |
| — | — | — | — | — | — |
| — | — | — | — | — | 4.73 |
Applications
Where MgPbSr2 is used.
Frequently Asked Questions
Common questions about MgPbSr2, answered from cross-validated data.
What is MgPbSr2?
MgPbSr2 is a semimetallic ternary intermetallic compound composed of magnesium, lead, and strontium that is typically found in a metastable state.
What is MgPbSr2 used for?
What is the band gap of MgPbSr2?
Is MgPbSr2 a metal, semiconductor, or insulator?
Is MgPbSr2 thermodynamically stable?
What is the crystal structure of MgPbSr2?
What is the density of MgPbSr2?
How many polymorphs of MgPbSr2 are known?
What elements does MgPbSr2 contain?
Where does the data for MgPbSr2 come from?
How It Compares
As a ternary intermetallic phase, MgPbSr2 represents a specialized structural configuration within the broader landscape of magnesium-lead-strontium alloys. Without direct structural siblings in this specific class, it serves as a distinct case study for researchers investigating the formation and stability of complex intermetallic compounds.
Data sources & attribution
- materials_project — Data from the Materials Project. Cite: Jain et al., APL Materials 1, 011002 (2013).
- nomad — Data from NOMAD. Cite: Draxl & Scheffler, J. Phys. Mater. 2, 036001 (2019).
- omat24 — Data from OMat24 (Meta FAIR). Cite: Barroso-Luque et al., arXiv 2410.12771 (2024).
- alexandria — Data from alexandria.
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