Sr2MgSi2O7
Sr2MgSi2O7 is a thermodynamically stable, wide-gap insulating silicate compound used in materials research.
About Sr2MgSi2O7
Sr2MgSi2O7 is a complex oxide belonging to the silicate family, characterized by its robust thermodynamic stability as a member of the convex hull. Its insulating electronic nature and structural integrity make it a significant subject for materials science investigations into dielectric and host lattice behaviors.
This compound is primarily utilized in research contexts where its stable crystalline framework serves as a reliable platform for functional materials. By maintaining structural consistency, it provides a foundation for exploring the interplay between its constituent magnesium, strontium, and silicate components.
Key Properties
Cross-validated computational properties for Sr2MgSi2O7, 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 Sr2MgSi2O7, 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. |
|---|---|---|---|---|---|
| P-421m (No. 113) | tetragonal | 4.50 | 0.0000 | -7.607 | 3.56 |
| P21/c (No. 14) | monoclinic | 4.50 | 0.0260 | -7.581 | 3.67 |
| P-421m (No. 113) | Tetragonal | — | — | — | 3.56 |
| P-421m (No. 113) | Tetragonal | — | — | — | 3.76 |
| P-421m (No. 113) | Tetragonal | — | — | — | 3.64 |
Synthesis Routes
Literature-extracted synthesis procedures targeting Sr2MgSi2O7.
Applications
Where Sr2MgSi2O7 is used.
Frequently Asked Questions
Common questions about Sr2MgSi2O7, answered from cross-validated data.
What is Sr2MgSi2O7?
Sr2MgSi2O7 is a thermodynamically stable, wide-gap insulating silicate compound used in materials research.
What is Sr2MgSi2O7 used for?
What is the band gap of Sr2MgSi2O7?
Is Sr2MgSi2O7 a metal, semiconductor, or insulator?
Is Sr2MgSi2O7 thermodynamically stable?
What is the crystal structure of Sr2MgSi2O7?
What is the density of Sr2MgSi2O7?
How many polymorphs of Sr2MgSi2O7 are known?
How is Sr2MgSi2O7 synthesized?
What elements does Sr2MgSi2O7 contain?
Where does the data for Sr2MgSi2O7 come from?
How It Compares
As a stable silicate, Sr2MgSi2O7 represents a well-defined crystalline phase that occupies a favorable position within the landscape of complex alkaline earth oxides, serving as a benchmark for stability in its structural class.
Data sources & attribution
- materials_project — Data from the Materials Project. Cite: Jain et al., APL Materials 1, 011002 (2013).
- mpaloe — Data from mpaloe.
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