Na2MgSiO4
Na2MgSiO4 is a thermodynamically stable, wide-gap insulating quaternary oxide composed of sodium, magnesium, silicon, and oxygen.
About Na2MgSiO4
Na2MgSiO4 is a complex oxide that exists as a thermodynamically stable phase on the convex hull. Its electronic character is defined by a wide band gap, classifying it as an insulating material with significant structural diversity across multiple reported configurations.
This compound represents an interesting intersection of alkali and alkaline earth metal chemistry within a silicate framework. Its stability and insulating nature make it a subject of interest for researchers investigating the fundamental properties of complex quaternary oxides.
Key Properties
Cross-validated computational properties for Na2MgSiO4, 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 Na2MgSiO4. 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 Na2MgSiO4, 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. |
|---|---|---|---|---|---|
| — | — | 4.15 | 0.0000 | -2.706 | — |
| Pc (No. 7) | monoclinic | 4.10 | 0.0000 | -2.649 | — |
| Pc (No. 7) | monoclinic | 3.76 | 0.0000 | -6.490 | 2.71 |
| Pna21 (No. 33) | orthorhombic | 3.77 | 0.0022 | -6.488 | 2.69 |
| Pc (No. 7) | monoclinic | — | — | — | 2.57 |
| Pc (No. 7) | monoclinic | — | — | — | 2.71 |
| Pna21 (No. 33) | orthorhombic | — | — | — | 2.56 |
| Pna21 (No. 33) | orthorhombic | — | — | — | 2.63 |
| Pc (No. 7) | monoclinic | — | — | — | 2.64 |
| Pna21 (No. 33) | orthorhombic | — | — | — | 2.67 |
| Pna21 (No. 33) | orthorhombic | — | — | — | 2.69 |
| Pc (No. 7) | monoclinic | — | — | — | 2.66 |
Applications
Where Na2MgSiO4 is used.
Frequently Asked Questions
Common questions about Na2MgSiO4, answered from cross-validated data.
What is Na2MgSiO4?
Na2MgSiO4 is a thermodynamically stable, wide-gap insulating quaternary oxide composed of sodium, magnesium, silicon, and oxygen.
What is Na2MgSiO4 used for?
What is the band gap of Na2MgSiO4?
Is Na2MgSiO4 a metal, semiconductor, or insulator?
Is Na2MgSiO4 thermodynamically stable?
What is the crystal structure of Na2MgSiO4?
What is the density of Na2MgSiO4?
How many polymorphs of Na2MgSiO4 are known?
What elements does Na2MgSiO4 contain?
Where does the data for Na2MgSiO4 come from?
How It Compares
As a quaternary silicate, Na2MgSiO4 occupies a distinct position in materials science research. While it is currently studied as an individual phase, its thermodynamic stability provides a robust baseline for comparing the structural and electronic behaviors of similar alkali-magnesium-silicate systems.
Data sources & attribution
- 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)
- 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)
- mpaloe — Data from MP-ALOE. Cite: Kuner et al., npj Comput. Mater. (2025), doi:10.1038/s41524-025-01834-9.
- cod — Data from the Crystallography Open Database (crystallography.net/cod/). Cite: Grazulis et al., J. Appl. Cryst. 42, 726 (2009). (CC0-1.0)
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