NbW
NbW is a thermodynamically stable metallic alloy formed from niobium and tungsten.
About NbW
NbW is a metallic intermetallic compound composed of niobium and tungsten. As a thermodynamically stable phase located on the convex hull, it represents a robust structural arrangement of these refractory transition metals.
Its metallic nature and structural stability make it a subject of significant interest in metallurgy and materials research. With a high number of reported structures across multiple databases, it is a well-documented phase within the binary system.
Key Properties
Cross-validated computational properties for NbW, aggregated across 6 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.
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.
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.
StructuresCount of reported calculated crystal structures for this formula, including alternate polymorphs, source databases, and observed space groups.
Cross-Source DFT Agreement
How well independent DFT databases agree on the thermodynamics of NbW. 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.
Hull SpreadDifference between the highest and lowest energy-above-hull values reported by comparable sources. Smaller spread means less thermodynamic disagreement.
Sources ComparedNumber and names of computational sources with comparable entries for this formula.
Space Group ConsensusWhether independent sources predict the same crystal symmetry for the lowest-energy structure.
Reported Structures
Lowest-energy structures reported for NbW, 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 | 0.00 | 0.0000 | -38.068 | 13.59 |
| — | — | 0.00 | 0.0047 | -0.035 | — |
| — | — | 0.00 | 0.0179 | -0.022 | — |
| Cmmm (No. 65) | orthorhombic | 0.00 | 0.2203 | -0.058 | — |
| — | — | 0.00 | 0.4091 | 0.370 | — |
| — | — | 0.00 | 0.4675 | 0.428 | — |
| Pm-3m (No. 221) | cubic | 0.00 | 0.5048 | 0.226 | — |
| — | — | 0.00 | 1.2218 | 1.182 | — |
| — | — | 0.00 | 2.6977 | 2.658 | — |
| P1 (No. 1) | triclinic | — | — | — | 13.01 |
| P1 (No. 1) | triclinic | — | — | — | 15.85 |
| P1 (No. 1) | triclinic | — | — | — | 14.38 |
Applications
Where NbW is used.
Frequently Asked Questions
Common questions about NbW, answered from cross-validated data.
What is NbW?
NbW is a thermodynamically stable metallic alloy formed from niobium and tungsten.
What is NbW used for?
What is the band gap of NbW?
Is NbW a metal, semiconductor, or insulator?
Is NbW thermodynamically stable?
What is the crystal structure of NbW?
What is the density of NbW?
How many polymorphs of NbW are known?
What elements does NbW contain?
Where does the data for NbW come from?
How It Compares
As a binary intermetallic phase, NbW serves as a fundamental building block in the study of niobium-tungsten alloys, representing a stable equilibrium state within this refractory metal system.
Data sources & attribution
- materials_project — Data from the Materials Project (materialsproject.org). Cite: Jain et al., APL Materials 1, 011002 (2013). (CC-BY-4.0)
- oqmd — Data from the OQMD (oqmd.org). Cite: Saal et al., JOM 65, 1501 (2013); Kirklin et al., npj Comp. Mater. 1, 15010 (2015). (CC-BY-4.0)
- jarvis — Data from JARVIS (jarvis.nist.gov), NIST. Cite: Choudhary et al., npj Comp. Mater. 6, 173 (2020). (LicenseRef-US-Gov-PD)
- mpaloe — Data from MP-ALOE. Cite: Kuner et al., npj Comput. Mater. (2025), doi:10.1038/s41524-025-01834-9.
Analyze NbW in the Lattice Graph platform
Polymorph comparison, confidence scoring, supply-chain risk, and patent monitoring — across 85 source databases.
Explore the Platform →