NaAgO2
NaAgO2 is a stable, semiconducting ternary oxide consisting of sodium, silver, and oxygen.
About NaAgO2
NaAgO2 is a complex oxide composed of sodium, silver, and oxygen. As a thermodynamically stable phase located on the convex hull, it represents a robust crystalline arrangement that has been characterized across multiple structural databases. Its electronic character as a semiconductor makes it an intriguing subject for fundamental investigations into the behavior of silver-based ternary oxides. The material's stability suggests it can be synthesized and handled under controlled conditions, providing a reliable platform for studying the interplay between its constituent elements. While its specific functional properties are still being mapped, its position within the landscape of inorganic compounds highlights its potential utility in specialized electronic or catalytic applications where stable, semiconducting oxides are required.
Key Properties
Cross-validated computational properties for NaAgO2, aggregated across 3 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.
Cross-Source DFT Agreement
How well independent DFT databases agree on the thermodynamics of NaAgO2. Tight agreement means computed properties can be trusted without re-running calculations.
Agreement ScoreA normalized confidence score summarizing how closely independent DFT databases agree. Higher scores mean tighter cross-source agreement.
Hull SpreadDifference between the highest and lowest energy-above-hull values reported by comparable sources. Smaller spread means less thermodynamic disagreement.
Sources ComparedNumber and names of computational sources with comparable entries for this formula.
Space Group ConsensusWhether independent sources predict the same crystal symmetry for the lowest-energy structure.
Reported Structures
Lowest-energy structures reported for NaAgO2, 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. |
|---|---|---|---|---|---|
| C2/m (No. 12) | monoclinic | 0.67 | 0.0000 | -0.843 | — |
| C2/m (No. 12) | monoclinic | 0.59 | 0.0000 | -4.523 | 5.27 |
| — | — | 0.59 | 0.0000 | -0.884 | — |
| C2/m (No. 12) | monoclinic | — | — | — | 5.11 |
| C2/m (No. 12) | monoclinic | — | — | — | 4.90 |
| C2/m (No. 12) | monoclinic | — | — | — | 5.30 |
Applications
Where NaAgO2 is used.
Frequently Asked Questions
Common questions about NaAgO2, answered from cross-validated data.
What is NaAgO2?
NaAgO2 is a stable, semiconducting ternary oxide consisting of sodium, silver, and oxygen.
What is NaAgO2 used for?
What is the band gap of NaAgO2?
Is NaAgO2 a metal, semiconductor, or insulator?
Is NaAgO2 thermodynamically stable?
What is the crystal structure of NaAgO2?
How many polymorphs of NaAgO2 are known?
What elements does NaAgO2 contain?
Where does the data for NaAgO2 come from?
How It Compares
As a distinct ternary oxide, NaAgO2 occupies a unique niche in materials science. Without direct structural siblings in its immediate class, it serves as a primary reference point for understanding the synthesis and stability of silver-alkali metal oxide systems.
Data sources & attribution
- jarvis — Data from JARVIS (jarvis.nist.gov), NIST. Cite: Choudhary et al., npj Comp. Mater. 6, 173 (2020). (LicenseRef-US-Gov-PD)
- materials_project — Data from the Materials Project (materialsproject.org). Cite: Jain et al., APL Materials 1, 011002 (2013). (CC-BY-4.0)
- oqmd — Data from the OQMD (oqmd.org). Cite: Saal et al., JOM 65, 1501 (2013); Kirklin et al., npj Comp. Mater. 1, 15010 (2015). (CC-BY-4.0)
- mpaloe — Data from MP-ALOE. Cite: Kuner et al., npj Comput. Mater. (2025), doi:10.1038/s41524-025-01834-9.
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