TiB
TiB has a DFT band gap of Metallic / not reported across 318 reported structures in 43 space groups; its lowest-energy polymorph is orthorhombic (Pnma (No. 62)). Cross-validated across 4 computational databases.
At a glance
Key Properties
Cross-validated computational properties for TiB, 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.
0.000 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)
2 DFT sources
StructuresCount of reported calculated crystal structures for this formula, including alternate polymorphs, source databases, and observed space groups.
318
4 databases, 43 space groups
Crystallography
Reported Structures
Lowest-energy structures reported for TiB, 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. |
|---|---|---|---|---|---|
| Pnma (No. 62) | orthorhombic | 0.00 | 0.0000 | -11.020 | 4.59 |
| F-43m (No. 216) | cubic | 0.00 | 1.5528 | -9.467 | 3.19 |
| Pnma (No. 62) | Orthorhombic | — | — | — | 3.80 |
| P2/c (No. 13) | Monoclinic | — | — | — | 4.32 |
| P21/m (No. 11) | Monoclinic | — | — | — | 4.01 |
| P21/m (No. 11) | Monoclinic | — | — | — | 3.19 |
| P4/nmm (No. 129) | Tetragonal | — | — | — | 2.41 |
| P21/m (No. 11) | Monoclinic | — | — | — | 2.84 |
| P-1 (No. 2) | Triclinic | — | — | — | 4.15 |
| P21/m (No. 11) | Monoclinic | — | — | — | 4.37 |
| P4/nmm (No. 129) | Tetragonal | — | — | — | 2.67 |
| Cm (No. 8) | Monoclinic | — | — | — | 4.07 |
Reference
Frequently Asked Questions
Common questions about TiB, answered from cross-validated data.
What is the band gap of TiB?
TiB is computed to be metallic (no band gap) in the reported DFT structures.
More questions
Is TiB a metal, semiconductor, or insulator?
Computed band structures report no gap, so it is metallic.
Is TiB thermodynamically stable?
Yes — TiB sits on the convex hull (energy above hull 0 eV/atom), i.e. on hull (stable).
What is the crystal structure of TiB?
The lowest-energy reported polymorph of TiB is orthorhombic symmetry, space group Pnma (No. 62).
What is the density of TiB?
The computed density of the ground-state structure of TiB is 4.59 g/cm³.
How many polymorphs of TiB are known?
318 structures of TiB are reported across 4 databases, spanning 43 distinct space groups.
What elements does TiB contain?
TiB contains B and Ti (2 elements).
Where does the data for TiB come from?
TiB data is cross-referenced from materials_project, mpaloe, cod.
Explore
Related Compounds
Other Ultra-High-Temperature Ceramics in the database.
Data sources & attribution
- materials_project — Data from the Materials Project. Cite: Jain et al., APL Materials 1, 011002 (2013).
- mpaloe — Data from mpaloe.
- cod — Data from the Crystallography Open Database. Cite: Grazulis et al., Nucleic Acids Res. 40, D420 (2012).
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