MgMn2O4
magnesium manganese oxide
MgMn2O4 is a stable, semiconducting magnesium manganese oxide utilized in research focused on oxygen-evolution catalysis.
About magnesium manganese oxide
MgMn2O4 is a semiconducting oxide that sits on the convex hull, indicating significant thermodynamic stability. Its complex structural chemistry is highlighted by the high volume of reported configurations found across multiple research databases, making it a subject of interest for fundamental solid-state studies.
As a member of the oxide oxygen-evolution catalyst class, this material is primarily investigated for its potential role in electrochemical energy conversion. Its stability and semiconducting nature provide a robust platform for exploring catalytic surface reactions in sustainable energy applications.
Key Properties
Cross-validated computational properties for magnesium manganese oxide, aggregated across 4 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 MgMn2O4, 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. |
|---|---|---|---|---|---|
| I41/amd (No. 141) | tetragonal | 0.00 | 0.0000 | -8.015 | 4.30 |
| I41/a (No. 88) | tetragonal | 1.01 | 0.0201 | -7.995 | 4.17 |
| Cm (No. 8) | monoclinic | 0.00 | 0.0252 | -7.990 | 4.14 |
| Cc (No. 9) | monoclinic | 0.44 | 0.0266 | -7.988 | 4.20 |
| Cm (No. 8) | monoclinic | 0.31 | 0.0274 | -7.988 | 4.20 |
| P1 (No. 1) | triclinic | 0.88 | 0.0281 | -7.987 | 4.20 |
| Cm (No. 8) | monoclinic | 0.00 | 0.0345 | -7.981 | 4.15 |
| Cm (No. 8) | monoclinic | 0.31 | 0.0354 | -7.980 | 4.14 |
| P1 (No. 1) | triclinic | 0.28 | 0.0377 | -7.977 | 4.19 |
| R3m (No. 160) | trigonal | 0.00 | 0.0407 | -7.974 | 4.17 |
| Cm (No. 8) | monoclinic | 0.00 | 0.0432 | -7.972 | 4.21 |
| Cm (No. 8) | monoclinic | 0.00 | 0.0444 | -7.971 | 4.20 |
Applications
Where magnesium manganese oxide is used.
Frequently Asked Questions
Common questions about magnesium manganese oxide, answered from cross-validated data.
What is MgMn2O4?
MgMn2O4 is a stable, semiconducting magnesium manganese oxide utilized in research focused on oxygen-evolution catalysis.
What is MgMn2O4 used for?
What is the band gap of MgMn2O4?
Is MgMn2O4 a metal, semiconductor, or insulator?
Is MgMn2O4 thermodynamically stable?
What is the crystal structure of MgMn2O4?
What is the density of MgMn2O4?
How many polymorphs of MgMn2O4 are known?
What elements does MgMn2O4 contain?
Where does the data for MgMn2O4 come from?
How It Compares
Within the oxide oxygen-evolution catalysts class.
Within the diverse family of oxide oxygen-evolution catalysts, MgMn2O4 distinguishes itself through its specific spinel-related architecture compared to the layered structures of LiCoO2 or LiNiO2. While materials like LaMnO3 or BiFeO3 are often studied for their perovskite-based properties, MgMn2O4 offers a unique magnesium-manganese framework that provides a different electronic environment for catalytic activity.
Related Compounds
Other Oxide Oxygen-Evolution Catalysts in the database.
Data sources & attribution
- materials_project — Data from the Materials Project. Cite: Jain et al., APL Materials 1, 011002 (2013).
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