K2Ti8O17
K2Ti8O17 has a DFT band gap of 2.85 eV across 4 reported structures in 1 space group; its reference structure is monoclinic (C2/m (No. 12)). Cross-validated across 2 computational databases.
At a glance
Key Properties
Cross-validated computational properties for K2Ti8O17, aggregated across 2 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.
2.85 eV
Range across DFT structures · ground state: wide gap
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.
0.010 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.
Near Hull
2 DFT sources
StructuresCount of reported calculated crystal structures for this formula, including alternate polymorphs, source databases, and observed space groups.
4
2 databases, 1 space group
Validation
Cross-Source DFT Agreement
How well independent DFT databases agree on the thermodynamics of K2Ti8O17. 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.
0.001 eV
EAH spread across sources
Sources ComparedNumber and names of computational sources with comparable entries for this formula.
2
materials_project, oqmd
Space Group ConsensusWhether independent sources predict the same crystal symmetry for the lowest-energy structure.
—
Crystallography
Reported Structures
Lowest-energy structures reported for K2Ti8O17, 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. |
|---|---|---|---|---|---|
| — | — | 2.85 | 0.0100 | -3.136 | — |
| C2/m (No. 12) | monoclinic | 2.78 | 0.0107 | -8.911 | 3.42 |
| C2/m (No. 12) | monoclinic | — | — | — | 3.33 |
| C2/m (No. 12) | monoclinic | — | — | — | 3.50 |
| C2/m (No. 12) | monoclinic | — | — | — | 3.40 |
Synthesis
Synthesis Routes
Literature-extracted synthesis procedures targeting K2Ti8O17.
Solid State
Procedure available · ceder_solid_state
Reference
Frequently Asked Questions
Common questions about K2Ti8O17, answered from cross-validated data.
What is the band gap of K2Ti8O17?
K2Ti8O17 has a DFT-computed band gap of 2.85 eV across 4 reported structures. Standard DFT underestimates band gaps, so the measured gap is typically larger.
More questions
Is K2Ti8O17 a metal, semiconductor, or insulator?
DFT predicts a band gap of up to 2.85 eV (a semiconductor). Measured gaps are typically larger.
Is K2Ti8O17 thermodynamically stable?
K2Ti8O17 has a lowest energy above hull of 0.010 eV/atom (near hull).
What is the crystal structure of K2Ti8O17?
The reference structure of K2Ti8O17 is monoclinic symmetry, space group C2/m (No. 12).
What is the density of K2Ti8O17?
The computed density of the ground-state structure of K2Ti8O17 is 3.42 g/cm³.
How many polymorphs of K2Ti8O17 are known?
4 structures of K2Ti8O17 are reported across 2 databases, spanning 1 distinct space group.
How is K2Ti8O17 synthesized?
Literature-reported routes for K2Ti8O17 include solid state.
What elements does K2Ti8O17 contain?
K2Ti8O17 contains K, O, and Ti (3 elements).
Where does the data for K2Ti8O17 come from?
K2Ti8O17 data is cross-referenced from oqmd, materials_project, mpaloe.
Explore
Related Compounds
Other Perovskite Oxides in the database.
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)
- mpaloe — Data from MP-ALOE. Cite: Kuner et al., npj Comput. Mater. (2025), doi:10.1038/s41524-025-01834-9.
Analyze K2Ti8O17 in the Lattice Graph platform
Polymorph comparison, confidence scoring, supply-chain risk, and patent monitoring — across 85 source databases.
Explore the Platform →