K2La2O6Pd2
K2La2O6Pd2 is a semiconducting quaternary oxide that is predicted to be thermodynamically stable enough for laboratory synthesis.
About K2La2O6Pd2
K2La2O6Pd2 is a complex quaternary oxide composed of potassium, lanthanum, oxygen, and palladium. As a semiconducting material, it represents a unique intersection of rare-earth chemistry and transition metal oxides, offering a distinct electronic profile for exploratory solid-state research.
This compound is identified as a near-hull phase, suggesting it is thermodynamically accessible and a viable candidate for experimental synthesis. With multiple reported structures across databases, it serves as a significant subject for researchers investigating the structural diversity of complex oxide systems.
Key Properties
Cross-validated computational properties for K2La2O6Pd2, 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 K2La2O6Pd2, 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/m (No. 12) | monoclinic | 0.44 | 0.0095 | -6.672 | 5.54 |
| — | — | — | — | — | 5.54 |
| No. 0 | unknown | — | — | — | 1.44 |
| C2/m (No. 12) | — | — | — | — | — |
Applications
Where K2La2O6Pd2 is used.
Frequently Asked Questions
Common questions about K2La2O6Pd2, answered from cross-validated data.
What is K2La2O6Pd2?
K2La2O6Pd2 is a semiconducting quaternary oxide that is predicted to be thermodynamically stable enough for laboratory synthesis.
What is K2La2O6Pd2 used for?
What is the band gap of K2La2O6Pd2?
Is K2La2O6Pd2 a metal, semiconductor, or insulator?
Is K2La2O6Pd2 thermodynamically stable?
What is the crystal structure of K2La2O6Pd2?
What is the density of K2La2O6Pd2?
How many polymorphs of K2La2O6Pd2 are known?
What elements does K2La2O6Pd2 contain?
Where does the data for K2La2O6Pd2 come from?
How It Compares
As a unique quaternary oxide, K2La2O6Pd2 occupies a specialized niche in materials science. Without direct structural siblings, it stands as an independent example of how integrating alkali metals with lanthanum and palladium can yield stable, semiconducting architectures that deviate from more common binary or ternary oxide frameworks.
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).
- cod — Data from the Crystallography Open Database. Cite: Grazulis et al., Nucleic Acids Res. 40, D420 (2012).
- aflow — Data from AFLOW. Cite: Curtarolo et al., Comp. Mater. Sci. 58, 218 (2012).
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