KMgMn4O8
KMgMn4O8 is a semiconducting quaternary oxide composed of potassium, magnesium, manganese, and oxygen that is currently studied for its varied structural forms.
About KMgMn4O8
KMgMn4O8 is a complex oxide featuring a quaternary arrangement of potassium, magnesium, manganese, and oxygen. As a semiconducting material, it represents an interesting subject for structural analysis within the broader landscape of manganese-based oxides.
While the compound exhibits a diverse range of reported structural configurations, it is characterized as being thermodynamically above the hull. This suggests that the material may be metastable, requiring specific synthesis conditions to stabilize its crystalline framework.
Key Properties
Cross-validated computational properties for KMgMn4O8, 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 KMgMn4O8, 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 | 0.04 | 0.1430 | -7.651 | 4.18 |
| P1 (No. 1) | triclinic | 0.00 | 0.1509 | -7.643 | 3.85 |
| C2/m (No. 12) | monoclinic | 0.18 | 0.1709 | -7.623 | 3.87 |
| P1 (No. 1) | triclinic | 0.00 | 0.1940 | -7.600 | 4.00 |
| P1 (No. 1) | Triclinic | — | — | — | 4.18 |
| P1 (No. 1) | Triclinic | — | — | — | 4.41 |
| P1 (No. 1) | Triclinic | — | — | — | 4.00 |
| P1 (No. 1) | Triclinic | — | — | — | 4.23 |
| P1 (No. 1) | Triclinic | — | — | — | 4.45 |
| P1 (No. 1) | Triclinic | — | — | — | 4.27 |
| P1 (No. 1) | Triclinic | — | — | — | 4.66 |
| P1 (No. 1) | Triclinic | — | — | — | 3.85 |
Applications
Where KMgMn4O8 is used.
Frequently Asked Questions
Common questions about KMgMn4O8, answered from cross-validated data.
What is KMgMn4O8?
KMgMn4O8 is a semiconducting quaternary oxide composed of potassium, magnesium, manganese, and oxygen that is currently studied for its varied structural forms.
What is KMgMn4O8 used for?
What is the band gap of KMgMn4O8?
Is KMgMn4O8 a metal, semiconductor, or insulator?
Is KMgMn4O8 thermodynamically stable?
What is the crystal structure of KMgMn4O8?
What is the density of KMgMn4O8?
How many polymorphs of KMgMn4O8 are known?
What elements does KMgMn4O8 contain?
Where does the data for KMgMn4O8 come from?
How It Compares
As a unique quaternary oxide, KMgMn4O8 serves as a distinct entry in the study of manganese-rich compounds. Without direct structural siblings in this specific class, it stands as an independent subject of investigation for researchers exploring how magnesium and potassium substitution influences the electronic and structural properties of manganese oxide lattices.
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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