Mg2Nb2SnO8
Mg2Nb2SnO8 is a metastable, semiconducting quaternary oxide used in materials research to study complex structural and electronic phenomena.
About Mg2Nb2SnO8
Mg2Nb2SnO8 is a complex quaternary oxide composed of magnesium, niobium, tin, and oxygen. As a semiconducting material, it represents an intriguing subject for solid-state chemistry research, particularly regarding the interplay between its constituent cations and the resulting electronic behavior. The compound exists in a metastable state, which makes its synthesis and structural characterization a significant focus for materials scientists. With multiple reported structures across various databases, it serves as a valuable case study for understanding phase stability and structural diversity in complex oxide systems.
Key Properties
Cross-validated computational properties for Mg2Nb2SnO8, 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 Mg2Nb2SnO8, 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/c (No. 15) | monoclinic | 2.27 | 0.0538 | -7.974 | 4.71 |
| C2/c (No. 15) | — | — | — | — | — |
| C2/c (No. 15) | Monoclinic | — | — | — | 4.71 |
| C2/c (No. 15) | Monoclinic | — | — | — | 4.94 |
| C2/c (No. 15) | Monoclinic | — | — | — | 4.80 |
Applications
Where Mg2Nb2SnO8 is used.
Frequently Asked Questions
Common questions about Mg2Nb2SnO8, answered from cross-validated data.
What is Mg2Nb2SnO8?
Mg2Nb2SnO8 is a metastable, semiconducting quaternary oxide used in materials research to study complex structural and electronic phenomena.
What is Mg2Nb2SnO8 used for?
What is the band gap of Mg2Nb2SnO8?
Is Mg2Nb2SnO8 a metal, semiconductor, or insulator?
Is Mg2Nb2SnO8 thermodynamically stable?
What is the crystal structure of Mg2Nb2SnO8?
What is the density of Mg2Nb2SnO8?
How many polymorphs of Mg2Nb2SnO8 are known?
What elements does Mg2Nb2SnO8 contain?
Where does the data for Mg2Nb2SnO8 come from?
How It Compares
As a unique quaternary oxide, Mg2Nb2SnO8 occupies a specialized niche in materials science. Unlike simpler binary or ternary oxides, this compound demonstrates the potential for complex structural arrangements that arise when incorporating multiple metal species into a single lattice, providing a distinct platform for exploring semiconducting properties in metastable oxide frameworks.
Data sources & attribution
- materials_project — Data from the Materials Project. Cite: Jain et al., APL Materials 1, 011002 (2013).
- jarvis — Data from JARVIS (NIST). Cite: Choudhary et al., npj Comp. Mater. 6, 173 (2020).
- mpaloe — Data from mpaloe.
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