Na4Nb8O32P4
Na4Nb8O32P4 is a thermodynamically stable, semiconducting inorganic compound being investigated as a sustainable, lead-free alternative for piezoelectric technologies.
About Na4Nb8O32P4
Na4Nb8O32P4 is a complex inorganic compound belonging to the class of lead-free piezoelectric materials. As a thermodynamically stable phase residing on the convex hull, it represents a robust crystalline arrangement that is of significant interest for researchers seeking alternatives to traditional lead-based ceramics.
Characterized by its semiconducting electronic nature, this material is part of a growing body of research into non-toxic ferroelectric and piezoelectric candidates. Its structural stability and unique composition make it a noteworthy subject for investigating polarization mechanisms in complex oxide systems.
Key Properties
Cross-validated computational properties for Na4Nb8O32P4, 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 Na4Nb8O32P4, 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. |
|---|---|---|---|---|---|
| P21 (No. 4) | monoclinic | 1.99 | 0.0000 | -8.449 | 3.55 |
| — | — | — | — | — | 3.58 |
| P21 (No. 4) | — | — | — | — | — |
Applications
Where Na4Nb8O32P4 is used.
Frequently Asked Questions
Common questions about Na4Nb8O32P4, answered from cross-validated data.
What is Na4Nb8O32P4?
Na4Nb8O32P4 is a thermodynamically stable, semiconducting inorganic compound being investigated as a sustainable, lead-free alternative for piezoelectric technologies.
What is Na4Nb8O32P4 used for?
What is the band gap of Na4Nb8O32P4?
Is Na4Nb8O32P4 a metal, semiconductor, or insulator?
Is Na4Nb8O32P4 thermodynamically stable?
What is the crystal structure of Na4Nb8O32P4?
What is the density of Na4Nb8O32P4?
How many polymorphs of Na4Nb8O32P4 are known?
What elements does Na4Nb8O32P4 contain?
Where does the data for Na4Nb8O32P4 come from?
How It Compares
Within the lead-free piezoelectrics class.
Within the diverse landscape of lead-free piezoelectrics, Na4Nb8O32P4 occupies a distinct niche compared to classic perovskites like BaTiO3 or NaNbO3. While those materials are widely utilized for their well-understood ferroelectric properties, this compound offers a more intricate structural framework, providing a different pathway for tuning piezoelectric performance in specialized electronic 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).
- omat24 — Data from OMat24 (Meta FAIR). Cite: Barroso-Luque et al., arXiv 2410.12771 (2024).
- aflow — Data from AFLOW. Cite: Curtarolo et al., Comp. Mater. Sci. 58, 218 (2012).
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