Sr4Nb2O9
Strontium niobate is a complex oxide material often studied for its dielectric and structural properties in solid-state chemistry. It is primarily utilized in academic and industrial research for the development of advanced electronic ceramics and functional materials.
Overview
Key Properties
Cross-validated computational properties for Sr4Nb2O9, 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.
1.50–3.72 eV
Range across DFT structures
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.
0.000 eV/atom
Best (lowest) across sources
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.
On hull (stable)
2 DFT sources
StructuresCount of reported calculated crystal structures for this formula, including alternate polymorphs, source databases, and observed space groups.
17
3 databases, 6 space groups
Crystallography
Reported Structures
Lowest-energy structures reported for Sr4Nb2O9, 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. |
|---|---|---|---|---|---|
| P63/m (No. 176) | hexagonal | 3.72 | 0.0000 | -14.027 | 4.74 |
| P-3 (No. 147) | trigonal | 3.42 | 0.0000 | -8.054 | 4.62 |
| P-1 (No. 2) | triclinic | 3.57 | 0.0020 | -8.052 | 4.66 |
| P1 (No. 1) | triclinic | 1.50 | 0.0761 | -7.977 | 5.11 |
| P1 (No. 1) | triclinic | 3.25 | 0.0783 | -7.975 | 4.55 |
| Immm (No. 71) | orthorhombic | 2.74 | 0.0803 | -7.973 | 4.80 |
| C2/c (No. 15) | monoclinic | 3.05 | 0.0836 | -7.970 | 4.80 |
| P1 (No. 1) | Triclinic | — | — | — | 5.19 |
| P-1 (No. 2) | Triclinic | — | — | — | 4.66 |
| P63/m (No. 176) | — | — | — | — | — |
| Immm (No. 71) | Orthorhombic | — | — | — | 4.88 |
| P-1 (No. 2) | Triclinic | — | — | — | 4.82 |
Uses
Applications
Where Sr4Nb2O9 is used.
Dielectric materials researchElectronic ceramics developmentSolid-state chemistry studies
Reference
Frequently Asked Questions
Common questions about Sr4Nb2O9, answered from cross-validated data.
What is Sr4Nb2O9?
Strontium niobate is a complex oxide material often studied for its dielectric and structural properties in solid-state chemistry. It is primarily utilized in academic and industrial research for the development of advanced electronic ceramics and functional materials.
What is Sr4Nb2O9 used for?
Sr4Nb2O9 is used in dielectric materials research, electronic ceramics development, and solid-state chemistry studies.
What is the band gap of Sr4Nb2O9?
Sr4Nb2O9 has a DFT-computed band gap of 1.50–3.72 eV across 17 reported structures.
Is Sr4Nb2O9 a metal, semiconductor, or insulator?
With a wide band gap up to 3.72 eV it is an insulator / wide-band-gap material.
Is Sr4Nb2O9 thermodynamically stable?
Yes — Sr4Nb2O9 sits on the convex hull (energy above hull 0 eV/atom), i.e. on hull (stable).
What is the crystal structure of Sr4Nb2O9?
The lowest-energy reported polymorph of Sr4Nb2O9 is hexagonal symmetry, space group P63/m (No. 176).
What is the density of Sr4Nb2O9?
The computed density of the ground-state structure of Sr4Nb2O9 is 4.74 g/cm³.
How many polymorphs of Sr4Nb2O9 are known?
17 structures of Sr4Nb2O9 are reported across 3 databases, spanning 6 distinct space groups.
What elements does Sr4Nb2O9 contain?
Sr4Nb2O9 contains Nb, O, and Sr (3 elements).
Where does the data for Sr4Nb2O9 come from?
Sr4Nb2O9 data is cross-referenced from materials_project, mpaloe, jarvis.
Explore
Related Compounds
Other Perovskite Oxides in the database.
Data sources & attribution
- materials_project — Data from the Materials Project. Cite: Jain et al., APL Materials 1, 011002 (2013).
- mpaloe — Data from mpaloe.
- jarvis — Data from JARVIS (NIST). Cite: Choudhary et al., npj Comp. Mater. 6, 173 (2020).
Analyze Sr4Nb2O9 in the Lattice Graph platform
Polymorph comparison, confidence scoring, supply-chain risk, and patent monitoring — across 53 integrated data sources.
Explore the Platform →