K4MgMn4O8
K4MgMn4O8 is a semiconducting quaternary oxide composed of potassium, magnesium, manganese, and oxygen that is primarily of interest for fundamental materials research.
About K4MgMn4O8
K4MgMn4O8 is a complex oxide containing potassium, magnesium, and manganese. As a semiconducting material, it represents a specific arrangement of transition metal oxides that has been identified across multiple structural configurations in computational databases. Its electronic nature makes it a subject of interest for researchers investigating the interplay between alkali metals and manganese-based frameworks.
Due to its position relative to the thermodynamic ground state, this compound is considered metastable. While it is not a common industrial material, its existence in structural databases highlights the diversity of potential phases within the potassium-magnesium-manganese-oxygen system, providing valuable data for high-throughput materials discovery.
Key Properties
Cross-validated computational properties for K4MgMn4O8, aggregated across 2 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 K4MgMn4O8, 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. |
|---|---|---|---|---|---|
| P1 (No. 1) | triclinic | 0.00 | 0.1354 | -6.710 | 3.27 |
| P1 (No. 1) | triclinic | 0.00 | 0.1398 | -6.705 | 2.98 |
| Pm (No. 6) | monoclinic | 0.00 | 0.1561 | -6.689 | 3.22 |
| C2 (No. 5) | monoclinic | 0.88 | 0.1588 | -6.686 | 3.26 |
| C2 (No. 5) | monoclinic | 0.95 | 0.1661 | -6.679 | 3.24 |
| P1 (No. 1) | Triclinic | — | — | — | 3.20 |
| P1 (No. 1) | Triclinic | — | — | — | 3.13 |
| C2 (No. 5) | Monoclinic | — | — | — | 3.50 |
| C2 (No. 5) | Monoclinic | — | — | — | 3.26 |
| Pm (No. 6) | Monoclinic | — | — | — | 3.45 |
| Pm (No. 6) | Monoclinic | — | — | — | 3.38 |
| Pm (No. 6) | Monoclinic | — | — | — | 3.22 |
Applications
Where K4MgMn4O8 is used.
Frequently Asked Questions
Common questions about K4MgMn4O8, answered from cross-validated data.
What is K4MgMn4O8?
K4MgMn4O8 is a semiconducting quaternary oxide composed of potassium, magnesium, manganese, and oxygen that is primarily of interest for fundamental materials research.
What is K4MgMn4O8 used for?
What is the band gap of K4MgMn4O8?
Is K4MgMn4O8 a metal, semiconductor, or insulator?
Is K4MgMn4O8 thermodynamically stable?
What is the crystal structure of K4MgMn4O8?
What is the density of K4MgMn4O8?
How many polymorphs of K4MgMn4O8 are known?
What elements does K4MgMn4O8 contain?
Where does the data for K4MgMn4O8 come from?
How It Compares
As a member of the broader family of complex manganese-based oxides, K4MgMn4O8 serves as a representative example of the structural complexity possible in quaternary oxide systems. Unlike more stable, well-characterized binary or ternary oxides, this compound occupies a unique space in the phase landscape, offering insights into the synthesis challenges and structural variations inherent in multi-component manganese oxides.
Data sources & attribution
- materials_project — Data from the Materials Project. Cite: Jain et al., APL Materials 1, 011002 (2013).
- mpaloe — Data from mpaloe.
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