K6Pb2O5
K6Pb2O5 is a stable, semiconducting ternary oxide containing potassium, lead, and oxygen.
About K6Pb2O5
K6Pb2O5 is a complex oxide composed of potassium, lead, and oxygen. As a thermodynamically stable compound residing on the convex hull, it represents a well-defined phase within its chemical system, offering a reliable structure for investigation in solid-state chemistry.
The material exhibits semiconducting electronic character, making it an interesting candidate for electronic and optoelectronic studies. Its stability suggests it can be synthesized and handled with relative ease compared to more metastable phases in the alkali-metal lead oxide family.
Key Properties
Cross-validated computational properties for K6Pb2O5, 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 K6Pb2O5, 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. |
|---|---|---|---|---|---|
| P-1 (No. 2) | triclinic | 2.12 | 0.0000 | -4.503 | 4.09 |
| P-1 (No. 2) | Triclinic | — | — | — | 3.88 |
| P-1 (No. 2) | Triclinic | — | — | — | 4.03 |
| P-1 (No. 2) | Triclinic | — | — | — | 3.99 |
| P-1 (No. 2) | — | — | — | — | — |
Applications
Where K6Pb2O5 is used.
Frequently Asked Questions
Common questions about K6Pb2O5, answered from cross-validated data.
What is K6Pb2O5?
K6Pb2O5 is a stable, semiconducting ternary oxide containing potassium, lead, and oxygen.
What is K6Pb2O5 used for?
What is the band gap of K6Pb2O5?
Is K6Pb2O5 a metal, semiconductor, or insulator?
Is K6Pb2O5 thermodynamically stable?
What is the crystal structure of K6Pb2O5?
What is the density of K6Pb2O5?
How many polymorphs of K6Pb2O5 are known?
What elements does K6Pb2O5 contain?
Where does the data for K6Pb2O5 come from?
How It Compares
As a unique phase within its chemical space, K6Pb2O5 serves as a foundational reference point for understanding the structural and electronic behavior of ternary potassium-lead oxides. Its position on the convex hull distinguishes it as a robust material that maintains structural integrity under standard conditions.
Data sources & attribution
- materials_project — Data from the Materials Project. Cite: Jain et al., APL Materials 1, 011002 (2013).
- mpaloe — Data from mpaloe.
- jarvis — Data from JARVIS (NIST). Cite: Choudhary et al., npj Comp. Mater. 6, 173 (2020).
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