K6Nb6O26Si4
K6Nb6O26Si4 is a stable, semiconducting complex oxide that serves as a potential candidate for lead-free piezoelectric and electronic applications.
About K6Nb6O26Si4
K6Nb6O26Si4 is a complex inorganic compound that occupies a unique position within the family of lead-free piezoelectric materials. As a thermodynamically stable phase, it maintains structural integrity under standard conditions, offering a robust platform for functional applications in electronic devices. Its semiconducting nature distinguishes it from typical wide-gap insulating piezoelectrics, providing interesting pathways for charge transport and polarization control.
The material is characterized by a sophisticated arrangement of niobium, silicon, and oxygen polyhedra, which facilitates the broken symmetry required for piezoelectricity. Its stability on the convex hull suggests that it is a well-defined, synthesizable compound, making it a subject of interest for researchers seeking alternatives to traditional lead-based ceramics in sustainable electronics.
Key Properties
Cross-validated computational properties for K6Nb6O26Si4, 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.
Applications
Where K6Nb6O26Si4 is used.
Frequently Asked Questions
Common questions about K6Nb6O26Si4, answered from cross-validated data.
What is K6Nb6O26Si4?
K6Nb6O26Si4 is a stable, semiconducting complex oxide that serves as a potential candidate for lead-free piezoelectric and electronic applications.
What is K6Nb6O26Si4 used for?
What is the band gap of K6Nb6O26Si4?
Is K6Nb6O26Si4 a metal, semiconductor, or insulator?
Is K6Nb6O26Si4 thermodynamically stable?
How many polymorphs of K6Nb6O26Si4 are known?
What elements does K6Nb6O26Si4 contain?
Where does the data for K6Nb6O26Si4 come from?
How It Compares
Within the lead-free piezoelectrics class.
Within the diverse landscape of lead-free piezoelectrics, K6Nb6O26Si4 stands out for its complex stoichiometry compared to simpler perovskites like KNbO3 or BaTiO3. While many of its siblings rely on the classic perovskite structure to achieve polar properties, this compound utilizes a more intricate framework involving silicon-niobium linkages, providing a distinct structural alternative to the more commonly studied NaTaO3 or NaNbO3.
Related Compounds
Other Lead-Free Piezoelectrics in the database.
Data sources & attribution
- latticegraph — Lattice Graph Materials Intelligence Platform
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