TcW
TcW is a metallic intermetallic compound composed of technetium and tungsten that exhibits a high degree of structural variety in theoretical studies.
About TcW
TcW is a metallic compound formed from the transition metals technetium and tungsten. Due to its metallic electronic character, it exhibits high conductivity typical of its constituent elements, though its position relative to the thermodynamic hull suggests it is not a stable phase under standard conditions.
Despite its instability, the compound is notable for its significant structural diversity. It has been the subject of extensive computational investigation, appearing in numerous reported structures across multiple material databases, which highlights its complexity in solid-state chemistry.
Key Properties
Cross-validated computational properties for TcW, aggregated across 5 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 TcW. 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 TcW, 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. |
|---|---|---|---|---|---|
| — | — | 0.00 | 0.0776 | 0.078 | — |
| Cmmm (No. 65) | orthorhombic | 0.00 | 0.1056 | -38.561 | 15.08 |
| — | — | 0.00 | 0.2300 | 0.230 | — |
| — | — | 0.00 | 0.2720 | 0.272 | — |
| — | — | 0.00 | 0.3580 | 0.358 | — |
| Cmmm (No. 65) | orthorhombic | 0.00 | 0.3757 | 0.097 | — |
| — | — | 0.00 | 1.1113 | 1.111 | — |
| — | — | 0.00 | 1.8926 | 1.893 | — |
| P1 (No. 1) | triclinic | — | — | — | 17.78 |
| C2 (No. 5) | monoclinic | — | — | — | 4.92 |
| P1 (No. 1) | triclinic | — | — | — | 11.78 |
| P1 (No. 1) | triclinic | — | — | — | 14.74 |
Applications
Where TcW is used.
Frequently Asked Questions
Common questions about TcW, answered from cross-validated data.
What is TcW?
TcW is a metallic intermetallic compound composed of technetium and tungsten that exhibits a high degree of structural variety in theoretical studies.
What is TcW used for?
What is the band gap of TcW?
Is TcW a metal, semiconductor, or insulator?
Is TcW thermodynamically stable?
How many polymorphs of TcW are known?
What elements does TcW contain?
Where does the data for TcW come from?
How It Compares
As a unique binary system involving technetium and tungsten, TcW represents a specialized area of intermetallic research. Without direct siblings in this specific class, it stands as a distinct case study in how transition metal combinations can manifest in a wide variety of structural configurations despite thermodynamic challenges.
Data sources & attribution
- 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)
- materials_project — Data from the Materials Project (materialsproject.org). Cite: Jain et al., APL Materials 1, 011002 (2013). (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 TcW in the Lattice Graph platform
Polymorph comparison, confidence scoring, supply-chain risk, and patent monitoring — across 85 source databases.
Explore the Platform →