Au2Na1Pb1
Au2Na1Pb1 is a complex, metastable ternary intermetallic compound featuring semimetallic electronic properties.
About Au2Na1Pb1
Au2Na1Pb1 is a complex ternary intermetallic compound composed of gold, sodium, and lead. It exhibits a semimetallic electronic character, placing it in a unique position between traditional metallic alloys and semiconducting materials.
Due to its position above the thermodynamic stability hull, this compound is considered metastable. Its existence is supported by a significant number of reported structural configurations, highlighting the intricate bonding landscape present in gold-based ternary systems.
Key Properties
Cross-validated computational properties for Au2Na1Pb1, 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 Au2Na1Pb1, 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 | 0.07 | 1.1455 | -39.413 | 0.93 |
| C2/m (No. 12) | — | — | — | — | — |
| Pm (No. 6) | — | — | — | — | — |
| P4/mmm (No. 123) | — | — | — | — | — |
| Cmmm (No. 65) | — | — | — | — | — |
| P4/mmm (No. 123) | — | — | — | — | — |
| P2/m (No. 10) | — | — | — | — | — |
| P4/mmm (No. 123) | — | — | — | — | — |
| Cm (No. 8) | — | — | — | — | — |
| I-4m2 (No. 119) | — | — | — | — | — |
| R3m (No. 160) | — | — | — | — | — |
| Pmmm (No. 47) | — | — | — | — | — |
Frequently Asked Questions
Common questions about Au2Na1Pb1, answered from cross-validated data.
What is Au2Na1Pb1?
Au2Na1Pb1 is a complex, metastable ternary intermetallic compound featuring semimetallic electronic properties.
What is the band gap of Au2Na1Pb1?
Is Au2Na1Pb1 a metal, semiconductor, or insulator?
Is Au2Na1Pb1 thermodynamically stable?
What is the crystal structure of Au2Na1Pb1?
What is the density of Au2Na1Pb1?
How many polymorphs of Au2Na1Pb1 are known?
What elements does Au2Na1Pb1 contain?
Where does the data for Au2Na1Pb1 come from?
How It Compares
As a ternary phase in the gold-sodium-lead system, Au2Na1Pb1 represents a specialized structural arrangement that demonstrates the diverse chemical possibilities within this metallic family. Unlike more common binary alloys, this compound occupies a distinct niche where the interplay of its constituent elements leads to its specific semimetallic electronic profile.
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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