AsKO5Ti
AsKO5Ti is a stable, lead-free insulating oxide with potential applications in piezoelectric technologies.
About AsKO5Ti
AsKO5Ti is a complex oxide belonging to the class of lead-free piezoelectric materials. As a wide-band-gap insulator, it exhibits robust electronic properties that make it a subject of interest for researchers seeking environmentally friendly alternatives to traditional lead-based ceramics. Its position on the convex hull confirms that it is a thermodynamically stable phase, suggesting potential for reliable synthesis and long-term functional performance.
This compound represents an intriguing addition to the landscape of functional oxides, where the integration of arsenic, potassium, and titanium creates a unique crystalline architecture. Its insulating nature is critical for its role in piezoelectric applications, where minimizing leakage current is essential for maintaining high efficiency in sensing and actuation devices.
Key Properties
Cross-validated computational properties for AsKO5Ti, aggregated across 3 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 AsKO5Ti. 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 AsKO5Ti, 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. |
|---|---|---|---|---|---|
| Pna21 (No. 33) | orthorhombic | 3.08 | 0.0000 | -7.367 | 3.30 |
| No. 0 | unknown | — | — | — | 0.86 |
| Pna21 (No. 33) | orthorhombic | — | — | — | 0.87 |
| — | — | — | — | — | — |
Applications
Where AsKO5Ti is used.
Frequently Asked Questions
Common questions about AsKO5Ti, answered from cross-validated data.
What is AsKO5Ti?
AsKO5Ti is a stable, lead-free insulating oxide with potential applications in piezoelectric technologies.
What is AsKO5Ti used for?
What is the band gap of AsKO5Ti?
Is AsKO5Ti a metal, semiconductor, or insulator?
Is AsKO5Ti thermodynamically stable?
What is the crystal structure of AsKO5Ti?
What is the density of AsKO5Ti?
How many polymorphs of AsKO5Ti are known?
What elements does AsKO5Ti contain?
Where does the data for AsKO5Ti come from?
How It Compares
Within the lead-free piezoelectrics class.
Within the diverse family of lead-free piezoelectrics, AsKO5Ti occupies a specialized niche compared to more conventional perovskite-structured materials like BaTiO3 or KTaO3. While many of its siblings rely on standard perovskite frameworks to achieve their electromechanical response, AsKO5Ti demonstrates the structural diversity possible within this class, offering a distinct chemical composition that contrasts with the more widely studied niobates and tantalates like NaNbO3 or NaTaO3.
Related Compounds
Other Lead-Free Piezoelectrics in the database.
Data sources & attribution
- materials_project — Data from the Materials Project. Cite: Jain et al., APL Materials 1, 011002 (2013).
- cod — Data from the Crystallography Open Database. Cite: Grazulis et al., Nucleic Acids Res. 40, D420 (2012).
- alexandria — Data from alexandria.
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