Nb2Sb
Niobium antimonide is a binary intermetallic compound composed of niobium and antimony. It is primarily studied in materials science research for its electronic properties and potential behavior as a superconductor.
NbSb
Overview
Key Properties
Cross-validated computational properties for Nb2Sb, 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.
0.324 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
2 DFT sources
StructuresCount of reported calculated crystal structures for this formula, including alternate polymorphs, source databases, and observed space groups.
97
4 databases, 19 space groups
Validation
Cross-Source DFT Agreement
How well independent DFT databases agree on the thermodynamics of Nb2Sb. 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.
1.00 / 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
materials_project
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 Nb2Sb, 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. |
|---|---|---|---|---|---|
| P1 (No. 1) | triclinic | 0.00 | 0.3242 | -25.086 | 8.38 |
| Cm (No. 8) | monoclinic | 0.00 | 0.4232 | -24.987 | 8.18 |
| C2/m (No. 12) | Monoclinic | — | — | — | 8.85 |
| Cm (No. 8) | Monoclinic | — | — | — | 4.41 |
| P-1 (No. 2) | Triclinic | — | — | — | 9.19 |
| P21/m (No. 11) | Monoclinic | — | — | — | 7.84 |
| P21/m (No. 11) | Monoclinic | — | — | — | 8.44 |
| P-1 (No. 2) | Triclinic | — | — | — | 9.75 |
| P-1 (No. 2) | Triclinic | — | — | — | 6.72 |
| C2/c (No. 15) | Monoclinic | — | — | — | 8.25 |
| C2/m (No. 12) | Monoclinic | — | — | — | 8.79 |
| P-1 (No. 2) | Triclinic | — | — | — | 8.31 |
Uses
Applications
Where Nb2Sb is used.
Condensed matter physics researchSuperconductivity studiesElectronic materials development
Reference
Frequently Asked Questions
Common questions about Nb2Sb, answered from cross-validated data.
What is Nb2Sb?
Niobium antimonide is a binary intermetallic compound composed of niobium and antimony. It is primarily studied in materials science research for its electronic properties and potential behavior as a superconductor.
More questions
What is Nb2Sb used for?
Nb2Sb is used in condensed matter physics research, superconductivity studies, and electronic materials development.
What is the band gap of Nb2Sb?
Nb2Sb is computed to be metallic (no band gap) in the reported DFT structures.
Is Nb2Sb a metal, semiconductor, or insulator?
Computed band structures report no gap, so it is metallic.
Is Nb2Sb thermodynamically stable?
Nb2Sb has a lowest energy above hull of 0.324 eV/atom (above hull).
What is the crystal structure of Nb2Sb?
The lowest-energy reported polymorph of Nb2Sb is triclinic symmetry, space group P1 (No. 1).
What is the density of Nb2Sb?
The computed density of the ground-state structure of Nb2Sb is 8.38 g/cm³.
How many polymorphs of Nb2Sb are known?
97 structures of Nb2Sb are reported across 4 databases, spanning 19 distinct space groups.
What elements does Nb2Sb contain?
Nb2Sb contains Nb and Sb (2 elements).
Where does the data for Nb2Sb come from?
Nb2Sb data is cross-referenced from materials_project, mpaloe.
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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