NaAlGeO4
NaAlGeO4 is a stable, insulating quaternary oxide composed of sodium, aluminum, germanium, and oxygen.
About NaAlGeO4
NaAlGeO4 is a complex inorganic compound composed of sodium, aluminum, germanium, and oxygen. As a thermodynamically stable phase located on the convex hull, it represents a robust crystalline arrangement that maintains structural integrity under standard conditions.
This material functions as a wide-band-gap insulator, a characteristic that makes it an interesting subject for studies involving dielectric properties and electronic insulation. Its composition allows for versatile structural configurations, reflecting the diverse coordination chemistry of aluminum and germanium within an oxide framework.
Key Properties
Cross-validated computational properties for NaAlGeO4, 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.
Reported Structures
Lowest-energy structures reported for NaAlGeO4, 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. |
|---|---|---|---|---|---|
| P21/c (No. 14) | monoclinic | 3.97 | 0.0000 | -6.854 | 3.18 |
| Pmc21 (No. 26) | orthorhombic | 3.07 | 0.0764 | -6.778 | 4.58 |
| No. 0 | unknown | — | — | — | 0.83 |
| Pmc21 (No. 26) | — | — | — | — | — |
Applications
Where NaAlGeO4 is used.
Frequently Asked Questions
Common questions about NaAlGeO4, answered from cross-validated data.
What is NaAlGeO4?
NaAlGeO4 is a stable, insulating quaternary oxide composed of sodium, aluminum, germanium, and oxygen.
What is NaAlGeO4 used for?
What is the band gap of NaAlGeO4?
Is NaAlGeO4 a metal, semiconductor, or insulator?
Is NaAlGeO4 thermodynamically stable?
What is the crystal structure of NaAlGeO4?
What is the density of NaAlGeO4?
How many polymorphs of NaAlGeO4 are known?
What elements does NaAlGeO4 contain?
Where does the data for NaAlGeO4 come from?
How It Compares
As a distinct oxide phase, NaAlGeO4 occupies a unique position in materials research, serving as a stable structural archetype for complex aluminogermanates. Its thermodynamic stability distinguishes it as a reliable candidate for fundamental studies into the behavior of quaternary oxides.
Data sources & attribution
- materials_project — Data from the Materials Project. Cite: Jain et al., APL Materials 1, 011002 (2013).
- cod — Data from the Crystallography Open Database. Cite: Grazulis et al., Nucleic Acids Res. 40, D420 (2012).
- jarvis — Data from JARVIS (NIST). Cite: Choudhary et al., npj Comp. Mater. 6, 173 (2020).
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