K8O28P8Zn4
K8O28P8Zn4 is a stable, insulating transition-metal phosphate used primarily in materials research.
About K8O28P8Zn4
K8O28P8Zn4 is a complex transition-metal phosphate characterized by its insulating electronic nature. As a thermodynamically stable phase residing on the convex hull, it represents a robust structural arrangement within the phosphate family, offering significant interest for fundamental materials science studies.
Its structural integrity and stability make it a noteworthy subject for researchers investigating the diverse coordination environments of zinc within phosphate frameworks. The compound is primarily utilized in academic and laboratory research to better understand the behavior of complex alkali-metal zinc phosphates.
Key Properties
Cross-validated computational properties for K8O28P8Zn4, 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 K8O28P8Zn4, 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. |
|---|---|---|---|---|---|
| P42/mnm (No. 136) | tetragonal | 4.13 | 0.0000 | -6.678 | 2.88 |
| P42/mnm (No. 136) | — | — | — | — | — |
| — | — | — | — | — | 2.32 |
Applications
Where K8O28P8Zn4 is used.
Frequently Asked Questions
Common questions about K8O28P8Zn4, answered from cross-validated data.
What is K8O28P8Zn4?
K8O28P8Zn4 is a stable, insulating transition-metal phosphate used primarily in materials research.
What is K8O28P8Zn4 used for?
What is the band gap of K8O28P8Zn4?
Is K8O28P8Zn4 a metal, semiconductor, or insulator?
Is K8O28P8Zn4 thermodynamically stable?
What is the crystal structure of K8O28P8Zn4?
What is the density of K8O28P8Zn4?
How many polymorphs of K8O28P8Zn4 are known?
What elements does K8O28P8Zn4 contain?
Where does the data for K8O28P8Zn4 come from?
How It Compares
Within the transition-metal phosphates class.
Unlike the well-known battery materials LiFePO4 and LiMnPO4, which are extensively studied for their electrochemical activity and ion-transport properties, K8O28P8Zn4 is primarily recognized for its structural stability as a wide-gap insulator. While its siblings often function as active cathode materials, this compound serves as a stable structural archetype within the broader class of transition-metal phosphates.
Related Compounds
Other Transition-Metal Phosphates in the database.
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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