K4O16P4Sr4
K4O16P4Sr4 is a stable, wide-gap insulating phosphate compound composed of potassium, strontium, phosphorus, and oxygen.
About K4O16P4Sr4
K4O16P4Sr4 is a complex inorganic phosphate compound characterized by its insulating electronic nature. As a thermodynamically stable material residing on the convex hull, it represents a robust structural arrangement of potassium, strontium, phosphorus, and oxygen atoms.
Its stability and wide-gap electronic profile make it a subject of interest in solid-state chemistry and materials science. Researchers study this compound to understand the interplay between its constituent elements and the resulting lattice configurations.
Key Properties
Cross-validated computational properties for K4O16P4Sr4, 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 K4O16P4Sr4, 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. |
|---|---|---|---|---|---|
| Pnma (No. 62) | orthorhombic | 5.09 | 0.0000 | -7.063 | 3.76 |
| Pnma (No. 62) | — | — | — | — | — |
| — | — | — | — | — | 2.71 |
Frequently Asked Questions
Common questions about K4O16P4Sr4, answered from cross-validated data.
What is K4O16P4Sr4?
K4O16P4Sr4 is a stable, wide-gap insulating phosphate compound composed of potassium, strontium, phosphorus, and oxygen.
What is the band gap of K4O16P4Sr4?
Is K4O16P4Sr4 a metal, semiconductor, or insulator?
Is K4O16P4Sr4 thermodynamically stable?
What is the crystal structure of K4O16P4Sr4?
What is the density of K4O16P4Sr4?
How many polymorphs of K4O16P4Sr4 are known?
What elements does K4O16P4Sr4 contain?
Where does the data for K4O16P4Sr4 come from?
How It Compares
As a unique phosphate phase, K4O16P4Sr4 serves as a distinct example of how alkaline and alkaline-earth metals integrate into complex anionic frameworks to achieve thermodynamic stability.
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).
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