Ag2La1Na1
Ag2La1Na1 is an unstable, semimetallic ternary compound composed of silver, lanthanum, and sodium.
About Ag2La1Na1
Ag2La1Na1 is a complex ternary compound composed of silver, lanthanum, and sodium. Its electronic character is defined as near-zero-gap, placing it in the semimetallic regime where conduction properties are highly sensitive to structural configuration. The material exhibits thermodynamic instability, as it resides above the hull in energy landscapes. Despite this, it has been the subject of significant structural investigation, with numerous reported configurations recorded across materials databases.
Key Properties
Cross-validated computational properties for Ag2La1Na1, 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 Ag2La1Na1, 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 | 0.08 | 1.6657 | -17.573 | 0.91 |
| C2/m (No. 12) | — | — | — | — | — |
| P4/mmm (No. 123) | — | — | — | — | — |
| P2/m (No. 10) | — | — | — | — | — |
| P2/m (No. 10) | — | — | — | — | — |
| R3m (No. 160) | — | — | — | — | — |
| P4mm (No. 99) | — | — | — | — | — |
| I4/mmm (No. 139) | — | — | — | — | — |
| P4/mmm (No. 123) | — | — | — | — | — |
| R-3m (No. 166) | — | — | — | — | — |
| P4mm (No. 99) | — | — | — | — | — |
| Pmmm (No. 47) | — | — | — | — | — |
Frequently Asked Questions
Common questions about Ag2La1Na1, answered from cross-validated data.
What is Ag2La1Na1?
Ag2La1Na1 is an unstable, semimetallic ternary compound composed of silver, lanthanum, and sodium.
What is the band gap of Ag2La1Na1?
Is Ag2La1Na1 a metal, semiconductor, or insulator?
Is Ag2La1Na1 thermodynamically stable?
What is the crystal structure of Ag2La1Na1?
What is the density of Ag2La1Na1?
How many polymorphs of Ag2La1Na1 are known?
What elements does Ag2La1Na1 contain?
Where does the data for Ag2La1Na1 come from?
How It Compares
As a unique ternary phase, Ag2La1Na1 represents a specialized area of study within intermetallic systems, serving as a point of interest for researchers investigating the limits of phase stability and electronic behavior in silver-lanthanum-sodium combinations.
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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