K8O40P8Ti8
K8O40P8Ti8 is a thermodynamically stable, insulating compound designed for use as a lead-free alternative in piezoelectric and electronic applications.
About K8O40P8Ti8
K8O40P8Ti8 is a complex inorganic compound characterized by its insulating electronic nature and high thermodynamic stability. As a member of the lead-free piezoelectric class, it offers a robust structural framework that avoids the environmental toxicity associated with traditional lead-based ceramics. Its position on the convex hull suggests a highly stable phase that is well-suited for rigorous material processing. The compound is primarily studied for its potential in advanced electromechanical applications where reliable performance and environmental compliance are essential. Its wide-band-gap character ensures minimal leakage currents, making it an attractive candidate for high-performance electronic components.
Key Properties
Cross-validated computational properties for K8O40P8Ti8, 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.
Reported Structures
Lowest-energy structures reported for K8O40P8Ti8, 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 | 3.06 | 0.0000 | -7.947 | 3.04 |
| Pna21 (No. 33) | orthorhombic | 2.73 | 0.0139 | -7.933 | 3.06 |
| No. 0 | unknown | — | — | — | 0.76 |
| No. 0 | unknown | — | — | — | 0.76 |
| Pna21 (No. 33) | — | — | — | — | — |
| Pna21 (No. 33) | — | — | — | — | — |
| No. 0 | unknown | — | — | — | 0.83 |
| No. 0 | unknown | — | — | — | 0.84 |
| Pna21 (No. 33) | — | — | — | — | — |
Applications
Where K8O40P8Ti8 is used.
Frequently Asked Questions
Common questions about K8O40P8Ti8, answered from cross-validated data.
What is K8O40P8Ti8?
K8O40P8Ti8 is a thermodynamically stable, insulating compound designed for use as a lead-free alternative in piezoelectric and electronic applications.
What is K8O40P8Ti8 used for?
What is the band gap of K8O40P8Ti8?
Is K8O40P8Ti8 a metal, semiconductor, or insulator?
Is K8O40P8Ti8 thermodynamically stable?
What is the crystal structure of K8O40P8Ti8?
What is the density of K8O40P8Ti8?
How many polymorphs of K8O40P8Ti8 are known?
What elements does K8O40P8Ti8 contain?
Where does the data for K8O40P8Ti8 come from?
How It Compares
Within the lead-free piezoelectrics class.
Within the diverse landscape of lead-free piezoelectrics, K8O40P8Ti8 represents a distinct structural alternative to the well-known perovskite-based systems like BaTiO3 and KNbO3. While materials such as NaNbO3 and KTaO3 are frequently utilized for their established ferroelectric properties, K8O40P8Ti8 offers a unique compositional profile that expands the design space for non-toxic piezoelectric materials. Its thermodynamic stability provides a reliable foundation for synthesis, distinguishing it from more volatile or metastable members of the titanate and niobate families.
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).
- aflow — Data from AFLOW. Cite: Curtarolo et al., Comp. Mater. Sci. 58, 218 (2012).
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