Sn8V4
Sn8V4 has a DFT band gap of Metallic / not reported across 8 reported structures in 4 space groups; its lowest-energy polymorph is orthorhombic (Fddd (No. 70)). Cross-validated across 4 computational databases.
Overview
Key Properties
Cross-validated computational properties for Sn8V4, aggregated across 4 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.
Metallic / not reported
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.
0.027 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.
Metastable
2 DFT sources
StructuresCount of reported calculated crystal structures for this formula, including alternate polymorphs, source databases, and observed space groups.
8
4 databases, 4 space groups
Crystallography
Reported Structures
Lowest-energy structures reported for Sn8V4, 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. |
|---|---|---|---|---|---|
| Fddd (No. 70) | orthorhombic | 0.00 | 0.0266 | -21.212 | 7.92 |
| Pnma (No. 62) | — | — | — | — | — |
| Fddd (No. 70) | — | — | — | — | — |
| Fddd (No. 70) | — | — | — | — | — |
| Fm-3m (No. 225) | — | — | — | — | — |
| — | — | — | — | — | 7.55 |
| — | — | — | — | — | 6.81 |
| No. 0 | unknown | — | — | — | 0.49 |
Reference
Frequently Asked Questions
Common questions about Sn8V4, answered from cross-validated data.
What is the band gap of Sn8V4?
Sn8V4 is computed to be metallic (no band gap) in the reported DFT structures.
More questions
Is Sn8V4 a metal, semiconductor, or insulator?
Computed band structures report no gap, so it is metallic.
Is Sn8V4 thermodynamically stable?
Sn8V4 has a lowest energy above hull of 0.027 eV/atom (metastable).
What is the crystal structure of Sn8V4?
The lowest-energy reported polymorph of Sn8V4 is orthorhombic symmetry, space group Fddd (No. 70).
What is the density of Sn8V4?
The computed density of the ground-state structure of Sn8V4 is 7.92 g/cm³.
How many polymorphs of Sn8V4 are known?
8 structures of Sn8V4 are reported across 4 databases, spanning 4 distinct space groups.
What elements does Sn8V4 contain?
Sn8V4 contains Sn and V (2 elements).
Where does the data for Sn8V4 come from?
Sn8V4 data is cross-referenced from materials_project, aflow, omat24, cod.
Explore
Related Compounds
Other A15 Superconductors in the database.
Data sources & attribution
- materials_project — Data from the Materials Project. Cite: Jain et al., APL Materials 1, 011002 (2013).
- aflow — Data from AFLOW. Cite: Curtarolo et al., Comp. Mater. Sci. 58, 218 (2012).
- omat24 — Data from OMat24 (Meta FAIR). Cite: Barroso-Luque et al., arXiv 2410.12771 (2024).
- cod — Data from the Crystallography Open Database. Cite: Grazulis et al., Nucleic Acids Res. 40, D420 (2012).
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