MgFe4CoO8
MgFe4CoO8 is a metastable, semiconducting spinel oxide containing magnesium, iron, and cobalt, primarily studied for its potential in advanced ceramic applications.
About MgFe4CoO8
MgFe4CoO8 is a complex oxide belonging to the spinel and hexagonal ferrite family. As a semiconducting material, it exhibits unique electronic characteristics that arise from the specific arrangement of magnesium, iron, cobalt, and oxygen atoms within its crystal lattice. Its metastable nature makes it a subject of significant interest for researchers investigating phase transitions and structural stability in multicomponent oxides. Due to its distinct composition, it serves as a valuable case study for understanding how transition metal substitution influences the electronic behavior of spinel-structured compounds. It is primarily utilized in fundamental materials research aimed at developing advanced magnetic and electronic ceramics.
Key Properties
Cross-validated computational properties for MgFe4CoO8, 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 MgFe4CoO8, 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. |
|---|---|---|---|---|---|
| R3m (No. 160) | trigonal | 1.47 | 0.0716 | -7.676 | 4.64 |
| R3m (No. 160) | Trigonal | — | — | — | 4.64 |
| R3m (No. 160) | Trigonal | — | — | — | 5.01 |
| R3m (No. 160) | Trigonal | — | — | — | 4.86 |
| R3m (No. 160) | — | — | — | — | — |
Applications
Where MgFe4CoO8 is used.
Frequently Asked Questions
Common questions about MgFe4CoO8, answered from cross-validated data.
What is MgFe4CoO8?
MgFe4CoO8 is a metastable, semiconducting spinel oxide containing magnesium, iron, and cobalt, primarily studied for its potential in advanced ceramic applications.
What is MgFe4CoO8 used for?
What is the band gap of MgFe4CoO8?
Is MgFe4CoO8 a metal, semiconductor, or insulator?
Is MgFe4CoO8 thermodynamically stable?
What is the crystal structure of MgFe4CoO8?
What is the density of MgFe4CoO8?
How many polymorphs of MgFe4CoO8 are known?
What elements does MgFe4CoO8 contain?
Where does the data for MgFe4CoO8 come from?
How It Compares
Within the spinel and hexagonal ferrites class.
Within the diverse group of ferrites, MgFe4CoO8 occupies a niche position compared to more common, thermodynamically stable spinels like MgFe2O4 or ZnFe2O4. While those simpler ferrites are extensively characterized for their magnetic properties, MgFe4CoO8 represents a more complex, metastable variation that challenges standard structural models, distinguishing it from the more widely utilized ferrite systems like MnFe2O4 or the perovskite-related SrFeO3.
Related Compounds
Other Spinel and Hexagonal Ferrites in the database.
Data sources & attribution
- materials_project — Data from the Materials Project. Cite: Jain et al., APL Materials 1, 011002 (2013).
- mpaloe — Data from mpaloe.
- jarvis — Data from JARVIS (NIST). Cite: Choudhary et al., npj Comp. Mater. 6, 173 (2020).
Analyze MgFe4CoO8 in the Lattice Graph platform
Polymorph comparison, confidence scoring, supply-chain risk, and patent monitoring — across 53 integrated data sources.
Explore the Platform →