Na1Pb2Sr1
Na1Pb2Sr1 is a semiconducting ternary intermetallic compound formed from sodium, lead, and strontium.
About Na1Pb2Sr1
Na1Pb2Sr1 is a ternary intermetallic compound composed of sodium, lead, and strontium. It exhibits semiconducting electronic character, positioning it as an interesting subject for fundamental studies in solid-state physics and materials science.
Due to its position above the thermodynamic hull, this material is considered metastable. Despite this, it has been identified across multiple structural configurations, reflecting the complex bonding interactions present between the alkali, alkaline earth, and heavy metal components.
Key Properties
Cross-validated computational properties for Na1Pb2Sr1, 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 Na1Pb2Sr1, 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 | 0.14 | 1.4396 | -31.866 | 0.51 |
| P4/mmm (No. 123) | — | — | — | — | — |
| P4mm (No. 99) | — | — | — | — | — |
| Imm2 (No. 44) | — | — | — | — | — |
| Fm-3m (No. 225) | — | — | — | — | — |
| I-4m2 (No. 119) | — | — | — | — | — |
| P4mm (No. 99) | — | — | — | — | — |
| P4/mmm (No. 123) | — | — | — | — | — |
| Cm (No. 8) | — | — | — | — | — |
| F-43m (No. 216) | — | — | — | — | — |
| P2/m (No. 10) | — | — | — | — | — |
| Cmmm (No. 65) | — | — | — | — | — |
Frequently Asked Questions
Common questions about Na1Pb2Sr1, answered from cross-validated data.
What is Na1Pb2Sr1?
Na1Pb2Sr1 is a semiconducting ternary intermetallic compound formed from sodium, lead, and strontium.
What is the band gap of Na1Pb2Sr1?
Is Na1Pb2Sr1 a metal, semiconductor, or insulator?
Is Na1Pb2Sr1 thermodynamically stable?
What is the crystal structure of Na1Pb2Sr1?
What is the density of Na1Pb2Sr1?
How many polymorphs of Na1Pb2Sr1 are known?
What elements does Na1Pb2Sr1 contain?
Where does the data for Na1Pb2Sr1 come from?
How It Compares
As a unique ternary phase within this specific chemical system, Na1Pb2Sr1 represents a distinct structural arrangement that highlights the diverse bonding possibilities between sodium, lead, and strontium. It serves as a case study for understanding how these elements interact to form semiconducting phases outside of the ground-state equilibrium.
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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