K4O14U4
K4O14U4 is a thermodynamically stable, semiconducting potassium uranium oxide used in advanced materials research.
About K4O14U4
K4O14U4 is a complex potassium uranium oxide that exhibits semiconducting electronic behavior. As a thermodynamically stable phase located on the convex hull, it represents a robust crystalline arrangement within the ternary K-O-U system. Its structural integrity makes it a significant subject for researchers investigating the interplay between alkali metals and actinide oxides. The compound is characterized by a well-defined atomic framework that has been documented across multiple structural databases, reflecting its importance in solid-state chemistry. Its stability suggests potential utility in specialized ceramic or nuclear-related material science applications where predictable phase behavior is essential.
Key Properties
Cross-validated computational properties for K4O14U4, 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 K4O14U4, 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 | 1.65 | 0.0000 | -8.732 | 6.01 |
| P-1 (No. 2) | triclinic | 1.69 | 0.0022 | -8.730 | 6.03 |
| Pm (No. 6) | monoclinic | 1.47 | 0.0614 | -8.671 | 5.77 |
| — | — | — | — | — | 4.66 |
| P21 (No. 4) | — | — | — | — | — |
Applications
Where K4O14U4 is used.
Frequently Asked Questions
Common questions about K4O14U4, answered from cross-validated data.
What is K4O14U4?
K4O14U4 is a thermodynamically stable, semiconducting potassium uranium oxide used in advanced materials research.
What is K4O14U4 used for?
What is the band gap of K4O14U4?
Is K4O14U4 a metal, semiconductor, or insulator?
Is K4O14U4 thermodynamically stable?
What is the crystal structure of K4O14U4?
What is the density of K4O14U4?
How many polymorphs of K4O14U4 are known?
What elements does K4O14U4 contain?
Where does the data for K4O14U4 come from?
How It Compares
As a distinct member of the potassium uranium oxide family, K4O14U4 occupies a stable position within the chemical landscape of its class. Unlike more transient or metastable phases, its presence on the convex hull indicates a favorable energy state, marking it as a reliable reference point for understanding the structural diversity of uranium-based ternary oxides.
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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