Mg2GeO4
Mg2GeO4 is a stable, insulating oxide compound frequently studied for its structural diversity and utility as a model system in materials science.
About Mg2GeO4
Mg2GeO4 is a wide-band-gap insulating compound that holds significant interest in materials science due to its robust thermodynamic stability. As a member of the germanate family, it serves as a critical model system for understanding phase transitions and structural behavior under varying conditions.
Its structural versatility is evidenced by the wide array of reported configurations found across multiple databases. This complexity makes it a valuable subject for researchers investigating the fundamental physics of oxides and their potential utility in advanced electronic or geological modeling applications.
Key Properties
Cross-validated computational properties for Mg2GeO4, 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 Mg2GeO4. 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 Mg2GeO4, 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. |
|---|---|---|---|---|---|
| — | — | 3.40 | 0.0000 | -2.589 | — |
| Fd-3m (No. 227) | cubic | 3.28 | 0.0000 | -2.562 | — |
| Fd-3m (No. 227) | cubic | 3.07 | 0.0000 | -6.695 | 4.38 |
| — | — | 3.81 | 0.0050 | -2.584 | — |
| Pnma (No. 62) | orthorhombic | 3.40 | 0.0204 | -6.674 | 4.04 |
| Pnma (No. 62) | orthorhombic | 3.58 | 0.0214 | -2.541 | — |
| — | — | 3.40 | 0.1023 | -2.487 | — |
| — | — | 2.82 | 0.4278 | -2.162 | — |
| Pnma (No. 62) | orthorhombic | — | — | — | 4.11 |
| Pnma (No. 62) | orthorhombic | — | — | — | 3.88 |
| Fd-3m (No. 227) | cubic | — | — | — | 4.50 |
| Pnma (No. 62) | orthorhombic | — | — | — | 3.99 |
Synthesis Routes
Literature-extracted synthesis procedures targeting Mg2GeO4.
Applications
Where Mg2GeO4 is used.
Frequently Asked Questions
Common questions about Mg2GeO4, answered from cross-validated data.
What is Mg2GeO4?
Mg2GeO4 is a stable, insulating oxide compound frequently studied for its structural diversity and utility as a model system in materials science.
What is Mg2GeO4 used for?
What is the band gap of Mg2GeO4?
Is Mg2GeO4 a metal, semiconductor, or insulator?
Is Mg2GeO4 thermodynamically stable?
What is the crystal structure of Mg2GeO4?
What is the density of Mg2GeO4?
How many polymorphs of Mg2GeO4 are known?
How is Mg2GeO4 synthesized?
What elements does Mg2GeO4 contain?
Where does the data for Mg2GeO4 come from?
How It Compares
As a thermodynamically stable oxide, Mg2GeO4 occupies a prominent position in the study of germanate materials. It is frequently utilized as a structural analogue for more complex silicates, providing researchers with a clearer window into the behavior of insulating mineral 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)
Analyze Mg2GeO4 in the Lattice Graph platform
Polymorph comparison, confidence scoring, supply-chain risk, and patent monitoring — across 85 source databases.
Explore the Platform →