SrMg14CuO16
SrMg14CuO16 has a DFT band gap of 0.06–0.70 eV across 8 reported structures in 2 space groups; its lowest-energy polymorph is orthorhombic (Pmmm (No. 47)). Cross-validated across 2 computational databases.
At a glance
Key Properties
Cross-validated computational properties for SrMg14CuO16, 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.
0.06–0.70 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.
0.105 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.
Above hull
1 DFT source
StructuresCount of reported calculated crystal structures for this formula, including alternate polymorphs, source databases, and observed space groups.
8
2 databases, 2 space groups
Crystallography
Reported Structures
Lowest-energy structures reported for SrMg14CuO16, 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. |
|---|---|---|---|---|---|
| Pmmm (No. 47) | orthorhombic | 0.70 | 0.1046 | -6.182 | 3.77 |
| P4/mmm (No. 123) | tetragonal | 0.06 | 0.1121 | -6.174 | 3.77 |
| P4/mmm (No. 123) | Tetragonal | — | — | — | 3.77 |
| P4/mmm (No. 123) | Tetragonal | — | — | — | 3.97 |
| P4/mmm (No. 123) | Tetragonal | — | — | — | 3.90 |
| Pmmm (No. 47) | Orthorhombic | — | — | — | 3.96 |
| Pmmm (No. 47) | Orthorhombic | — | — | — | 3.77 |
| Pmmm (No. 47) | Orthorhombic | — | — | — | 3.90 |
Reference
Frequently Asked Questions
Common questions about SrMg14CuO16, answered from cross-validated data.
What is the band gap of SrMg14CuO16?
SrMg14CuO16 has a DFT-computed band gap of 0.06–0.70 eV across 8 reported structures.
More questions
Is SrMg14CuO16 a metal, semiconductor, or insulator?
With a band gap up to 0.70 eV it is a semiconductor.
Is SrMg14CuO16 thermodynamically stable?
SrMg14CuO16 has a lowest energy above hull of 0.105 eV/atom (above hull).
What is the crystal structure of SrMg14CuO16?
The lowest-energy reported polymorph of SrMg14CuO16 is orthorhombic symmetry, space group Pmmm (No. 47).
What is the density of SrMg14CuO16?
The computed density of the ground-state structure of SrMg14CuO16 is 3.77 g/cm³.
How many polymorphs of SrMg14CuO16 are known?
8 structures of SrMg14CuO16 are reported across 2 databases, spanning 2 distinct space groups.
What elements does SrMg14CuO16 contain?
SrMg14CuO16 contains Cu, Mg, O, and Sr (4 elements).
Where does the data for SrMg14CuO16 come from?
SrMg14CuO16 data is cross-referenced from materials_project, mpaloe.
Explore
Related Compounds
Other Cuprate Superconductors 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.
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