NbRe
Niobium rhenium is a binary intermetallic compound composed of niobium and rhenium. It is primarily studied for its physical properties in the field of condensed matter physics, particularly regarding its behavior at low temperatures.
NbRe
Overview
Key Properties
Cross-validated computational properties for NbRe, 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.
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.
0.000 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.
On hull (stable)
4 DFT sources
StructuresCount of reported calculated crystal structures for this formula, including alternate polymorphs, source databases, and observed space groups.
223
6 databases, 31 space groups
Validation
Cross-Source DFT Agreement
How well independent DFT databases agree on the thermodynamics of NbRe. 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: high
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.
3
jarvis, materials_project, nomad
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 NbRe, 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 | -38.750 | 14.19 |
| Cmm2 (No. 35) | Orthorhombic | — | — | — | 13.11 |
| P21/m (No. 11) | Monoclinic | — | — | — | 11.28 |
| P-1 (No. 2) | Triclinic | — | — | — | 8.14 |
| Pbcm (No. 57) | Orthorhombic | — | — | — | 13.63 |
| P21/m (No. 11) | Monoclinic | — | — | — | 10.45 |
| Pbcm (No. 57) | Orthorhombic | — | — | — | 14.56 |
| Pbcm (No. 57) | Orthorhombic | — | — | — | 11.76 |
| Cmme (No. 67) | Orthorhombic | — | — | — | 9.85 |
| P3m1 (No. 156) | Trigonal | — | — | — | 15.14 |
| P3m1 (No. 156) | Trigonal | — | — | — | 10.64 |
| Cm (No. 8) | Monoclinic | — | — | — | 14.61 |
Uses
Applications
Where NbRe is used.
Superconductivity researchFundamental materials science studies
Reference
Frequently Asked Questions
Common questions about NbRe, answered from cross-validated data.
What is NbRe?
Niobium rhenium is a binary intermetallic compound composed of niobium and rhenium. It is primarily studied for its physical properties in the field of condensed matter physics, particularly regarding its behavior at low temperatures.
More questions
What is NbRe used for?
NbRe is used in superconductivity research and fundamental materials science studies.
What is the band gap of NbRe?
NbRe is computed to be metallic (no band gap) in the reported DFT structures.
Is NbRe a metal, semiconductor, or insulator?
Computed band structures report no gap, so it is metallic.
Is NbRe thermodynamically stable?
Yes — NbRe sits on the convex hull (energy above hull 0 eV/atom), i.e. on hull (stable).
What is the crystal structure of NbRe?
The lowest-energy reported polymorph of NbRe is orthorhombic symmetry, space group Cmmm (No. 65).
What is the density of NbRe?
The computed density of the ground-state structure of NbRe is 14.19 g/cm³.
How many polymorphs of NbRe are known?
223 structures of NbRe are reported across 6 databases, spanning 31 distinct space groups.
What elements does NbRe contain?
NbRe contains Nb and Re (2 elements).
Where does the data for NbRe come from?
NbRe data is cross-referenced from materials_project, mpaloe, nomad.
Data sources & attribution
- materials_project — Data from the Materials Project. Cite: Jain et al., APL Materials 1, 011002 (2013).
- mpaloe — Data from mpaloe.
- nomad — Data from NOMAD. Cite: Draxl & Scheffler, J. Phys. Mater. 2, 036001 (2019).
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