Ge2Na2O10Ta2
Ge2Na2O10Ta2 is a stable, insulating oxide material investigated for its potential use in lead-free piezoelectric and dielectric devices.
About Ge2Na2O10Ta2
Ge2Na2O10Ta2 is a complex oxide belonging to the lead-free piezoelectric class. As a thermodynamically stable compound residing on the convex hull, it offers a promising alternative to traditional lead-based ceramics in high-performance sensing and actuation technologies. Its electronic structure is characterized as a wide-band-gap insulator, which is essential for maintaining high resistivity in demanding dielectric applications.
This material is of significant interest to researchers aiming to replace toxic lead-containing components in modern electronics. Its structural robustness and insulating properties make it a viable candidate for integration into energy-harvesting devices and precision sensors where thermal and chemical stability are paramount.
Key Properties
Cross-validated computational properties for Ge2Na2O10Ta2, 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 Ge2Na2O10Ta2, 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. |
|---|---|---|---|---|---|
| C2/c (No. 15) | monoclinic | 3.36 | 0.0000 | -8.049 | 5.52 |
| C2/c (No. 15) | — | — | — | — | — |
| C2/c (No. 15) | — | — | — | — | — |
| — | — | — | — | — | 5.53 |
| No. 0 | unknown | — | — | — | 1.44 |
Applications
Where Ge2Na2O10Ta2 is used.
Frequently Asked Questions
Common questions about Ge2Na2O10Ta2, answered from cross-validated data.
What is Ge2Na2O10Ta2?
Ge2Na2O10Ta2 is a stable, insulating oxide material investigated for its potential use in lead-free piezoelectric and dielectric devices.
What is Ge2Na2O10Ta2 used for?
What is the band gap of Ge2Na2O10Ta2?
Is Ge2Na2O10Ta2 a metal, semiconductor, or insulator?
Is Ge2Na2O10Ta2 thermodynamically stable?
What is the crystal structure of Ge2Na2O10Ta2?
What is the density of Ge2Na2O10Ta2?
How many polymorphs of Ge2Na2O10Ta2 are known?
What elements does Ge2Na2O10Ta2 contain?
Where does the data for Ge2Na2O10Ta2 come from?
How It Compares
Within the lead-free piezoelectrics class.
Within the diverse family of lead-free piezoelectrics, Ge2Na2O10Ta2 stands out for its unique stoichiometry compared to simpler perovskite-structured siblings like NaTaO3 and KTaO3. While materials such as BaTiO3 remain the industry standard for piezoelectric performance, this germanate-tantalate complex offers a distinct structural framework that provides researchers with a wider design space for tuning electromechanical properties without relying on heavy metals.
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).
- aflow — Data from AFLOW. Cite: Curtarolo et al., Comp. Mater. Sci. 58, 218 (2012).
- omat24 — Data from OMat24 (Meta FAIR). Cite: Barroso-Luque et al., arXiv 2410.12771 (2024).
- cod — Data from the Crystallography Open Database. Cite: Grazulis et al., Nucleic Acids Res. 40, D420 (2012).
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