K8Mg8O32P8
K8Mg8O32P8 is a thermodynamically stable, wide-gap insulating phosphate compound composed of potassium, magnesium, oxygen, and phosphorus.
About K8Mg8O32P8
K8Mg8O32P8 is a complex inorganic phosphate that exhibits a wide-gap insulating electronic character. As a thermodynamically stable phase located on the convex hull, it represents a robust crystalline arrangement of potassium, magnesium, oxygen, and phosphorus atoms. Its structural integrity makes it a significant subject for researchers investigating stable dielectric or solid-state electrolyte materials. The compound has been identified across multiple structural databases, reflecting its well-defined nature in the solid state. Its composition suggests potential utility in applications requiring stable, non-conductive oxide frameworks where chemical durability is paramount.
Key Properties
Cross-validated computational properties for K8Mg8O32P8, 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 K8Mg8O32P8, 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/c (No. 14) | monoclinic | 4.78 | 0.0000 | -6.905 | 2.45 |
| — | — | — | — | — | 2.09 |
| — | — | — | — | — | 2.09 |
| — | — | — | — | — | 2.09 |
| P21/c (No. 14) | — | — | — | — | — |
Applications
Where K8Mg8O32P8 is used.
Frequently Asked Questions
Common questions about K8Mg8O32P8, answered from cross-validated data.
What is K8Mg8O32P8?
K8Mg8O32P8 is a thermodynamically stable, wide-gap insulating phosphate compound composed of potassium, magnesium, oxygen, and phosphorus.
What is K8Mg8O32P8 used for?
What is the band gap of K8Mg8O32P8?
Is K8Mg8O32P8 a metal, semiconductor, or insulator?
Is K8Mg8O32P8 thermodynamically stable?
What is the crystal structure of K8Mg8O32P8?
What is the density of K8Mg8O32P8?
How many polymorphs of K8Mg8O32P8 are known?
What elements does K8Mg8O32P8 contain?
Where does the data for K8Mg8O32P8 come from?
How It Compares
As a thermodynamically stable member of the phosphate family, K8Mg8O32P8 serves as a benchmark for structural stability in complex magnesium-potassium systems. It occupies a distinct position within its chemical class, offering a highly ordered lattice that contrasts with more disordered or metastable phosphate phases found in similar compositional spaces.
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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