F10K2Na2Nb2O2
F10K2Na2Nb2O2 is a stable, lead-free oxyfluoride material designed for use in piezoelectric and electronic applications.
About F10K2Na2Nb2O2
F10K2Na2Nb2O2 is a complex, lead-free piezoelectric compound characterized by its insulating electronic nature and robust thermodynamic stability. As a member of the oxyfluoride family, it offers a unique structural framework that distinguishes it from traditional oxide-based ferroelectrics.
Its inherent stability on the convex hull makes it an attractive candidate for advanced electronic components where lead-based materials are increasingly restricted. The compound is being explored for its potential to maintain piezoelectric performance while adhering to modern environmental standards in sensor and actuator technologies.
Key Properties
Cross-validated computational properties for F10K2Na2Nb2O2, 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.
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 F10K2Na2Nb2O2, 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 | 4.38 | 0.0000 | -6.272 | 2.94 |
| P4/nmm (No. 129) | tetragonal | 4.27 | 0.0050 | -6.267 | 2.77 |
| P4/nmm (No. 129) | — | — | — | — | — |
| P4/nmm (No. 129) | — | — | — | — | — |
| No. 0 | unknown | — | — | — | 0.78 |
Applications
Where F10K2Na2Nb2O2 is used.
Frequently Asked Questions
Common questions about F10K2Na2Nb2O2, answered from cross-validated data.
What is F10K2Na2Nb2O2?
F10K2Na2Nb2O2 is a stable, lead-free oxyfluoride material designed for use in piezoelectric and electronic applications.
What is F10K2Na2Nb2O2 used for?
What is the band gap of F10K2Na2Nb2O2?
Is F10K2Na2Nb2O2 a metal, semiconductor, or insulator?
Is F10K2Na2Nb2O2 thermodynamically stable?
What is the crystal structure of F10K2Na2Nb2O2?
What is the density of F10K2Na2Nb2O2?
How many polymorphs of F10K2Na2Nb2O2 are known?
What elements does F10K2Na2Nb2O2 contain?
Where does the data for F10K2Na2Nb2O2 come from?
How It Compares
Within the lead-free piezoelectrics class.
Within the landscape of lead-free piezoelectrics, F10K2Na2Nb2O2 serves as a specialized alternative to more traditional perovskite-structured materials like NaNbO3 and KNbO3. While classic members such as BaTiO3 and KTaO3 are widely utilized for their well-understood dielectric properties, this oxyfluoride variant provides a distinct chemical composition that may offer unique polarization characteristics and structural flexibility for specific high-performance applications.
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).
- nomad — Data from NOMAD. Cite: Draxl & Scheffler, J. Phys. Mater. 2, 036001 (2019).
- aflow — Data from AFLOW. Cite: Curtarolo et al., Comp. Mater. Sci. 58, 218 (2012).
- cod — Data from the Crystallography Open Database. Cite: Grazulis et al., Nucleic Acids Res. 40, D420 (2012).
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