NbSn
NbSn has a DFT band gap of Metallic / not reported across 103 reported structures in 27 space groups; its lowest-energy polymorph is Orthorhombic (Cmmm (No. 65)). Cross-validated across 3 computational databases.
At a glance
Key Properties
Cross-validated computational properties for NbSn, 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.
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.
—
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.
Not assessed
2 DFT sources
StructuresCount of reported calculated crystal structures for this formula, including alternate polymorphs, source databases, and observed space groups.
103
3 databases, 27 space groups
Validation
Cross-Source DFT Agreement
How well independent DFT databases agree on the thermodynamics of NbSn. Tight agreement means computed properties can be trusted without re-running calculations.
Agreement ScoreA normalized confidence score summarizing how closely independent DFT databases agree. Higher scores mean tighter cross-source agreement.
0.00 / 1.00
Trust tier: medium
Hull SpreadDifference between the highest and lowest energy-above-hull values reported by comparable sources. Smaller spread means less thermodynamic disagreement.
0.000 eV
EAH spread across sources
Sources ComparedNumber and names of computational sources with comparable entries for this formula.
1
jarvis
Space Group ConsensusWhether independent sources predict the same crystal symmetry for the lowest-energy structure.
All match
Crystallography
Reported Structures
Lowest-energy structures reported for NbSn, 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. |
|---|---|---|---|---|---|
| Cmmm (No. 65) | Orthorhombic | — | — | — | 4.27 |
| P2/c (No. 13) | Monoclinic | — | — | — | 7.97 |
| P2/c (No. 13) | Monoclinic | — | — | — | 8.34 |
| Cc (No. 9) | Monoclinic | — | — | — | 11.06 |
| Cmcm (No. 63) | Orthorhombic | — | — | — | 4.84 |
| Cmcm (No. 63) | Orthorhombic | — | — | — | 7.97 |
| Cm (No. 8) | Monoclinic | — | — | — | 7.21 |
| Cm (No. 8) | Monoclinic | — | — | — | 7.81 |
| Cm (No. 8) | Monoclinic | — | — | — | 7.78 |
| P21/c (No. 14) | Monoclinic | — | — | — | 8.14 |
| P21/c (No. 14) | Monoclinic | — | — | — | 7.76 |
| P21/c (No. 14) | Monoclinic | — | — | — | 7.76 |
Reference
Frequently Asked Questions
Common questions about NbSn, answered from cross-validated data.
What is the band gap of NbSn?
NbSn is computed to be metallic (no band gap) in the reported DFT structures.
More questions
Is NbSn a metal, semiconductor, or insulator?
Computed band structures report no gap, so it is metallic.
What is the crystal structure of NbSn?
The lowest-energy reported polymorph of NbSn is Orthorhombic symmetry, space group Cmmm (No. 65).
What is the density of NbSn?
The computed density of the ground-state structure of NbSn is 4.27 g/cm³.
How many polymorphs of NbSn are known?
103 structures of NbSn are reported across 3 databases, spanning 27 distinct space groups.
What elements does NbSn contain?
NbSn contains Nb and Sn (2 elements).
Where does the data for NbSn come from?
NbSn data is cross-referenced from mpaloe, jarvis.
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Related Compounds
Other A15 Superconductors in the database.
Data sources & attribution
- mpaloe — Data from mpaloe.
- jarvis — Data from JARVIS (NIST). Cite: Choudhary et al., npj Comp. Mater. 6, 173 (2020).
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