FeCo3O8
This compound is a mixed-metal oxide containing iron and cobalt. It is primarily investigated in materials science research for its potential magnetic and catalytic properties.
Overview
Key Properties
Cross-validated computational properties for FeCo3O8, 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.
0.19–0.25 eV
Range across DFT structures
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.
0.082 eV/atom
Best (lowest) across sources
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.
Metastable
2 DFT sources
StructuresCount of reported calculated crystal structures for this formula, including alternate polymorphs, source databases, and observed space groups.
15
3 databases, 5 space groups
Crystallography
Reported Structures
Lowest-energy structures reported for FeCo3O8, 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. |
|---|---|---|---|---|---|
| P63mc (No. 186) | hexagonal | 0.00 | 0.0821 | -6.866 | 4.93 |
| P1 (No. 1) | triclinic | 0.19 | 0.1127 | -6.835 | 4.50 |
| R3m (No. 160) | trigonal | 0.00 | 0.1194 | -6.828 | 4.56 |
| P4332 (No. 212) | cubic | 0.25 | 0.1328 | -6.815 | 4.68 |
| R-3m (No. 166) | trigonal | 0.00 | 0.1444 | -6.803 | 4.36 |
| R3m (No. 160) | Trigonal | — | — | — | 4.56 |
| R3m (No. 160) | Trigonal | — | — | — | 4.83 |
| R3m (No. 160) | Trigonal | — | — | — | 4.69 |
| R-3m (No. 166) | — | — | — | — | — |
| P63mc (No. 186) | Hexagonal | — | — | — | 5.41 |
| P63mc (No. 186) | Hexagonal | — | — | — | 5.34 |
| R-3m (No. 166) | Trigonal | — | — | — | 4.69 |
Uses
Applications
Where FeCo3O8 is used.
Materials science researchCatalysis studiesMagnetic material development
Reference
Frequently Asked Questions
Common questions about FeCo3O8, answered from cross-validated data.
What is FeCo3O8?
This compound is a mixed-metal oxide containing iron and cobalt. It is primarily investigated in materials science research for its potential magnetic and catalytic properties.
More questions
What is FeCo3O8 used for?
FeCo3O8 is used in materials science research, catalysis studies, and magnetic material development.
What is the band gap of FeCo3O8?
FeCo3O8 has a DFT-computed band gap of 0.19–0.25 eV across 15 reported structures.
Is FeCo3O8 a metal, semiconductor, or insulator?
With a band gap up to 0.25 eV it is a semiconductor.
Is FeCo3O8 thermodynamically stable?
FeCo3O8 has a lowest energy above hull of 0.082 eV/atom (metastable).
What is the crystal structure of FeCo3O8?
The lowest-energy reported polymorph of FeCo3O8 is hexagonal symmetry, space group P63mc (No. 186).
What is the density of FeCo3O8?
The computed density of the ground-state structure of FeCo3O8 is 4.93 g/cm³.
How many polymorphs of FeCo3O8 are known?
15 structures of FeCo3O8 are reported across 3 databases, spanning 5 distinct space groups.
What elements does FeCo3O8 contain?
FeCo3O8 contains Co, Fe, and O (3 elements).
Where does the data for FeCo3O8 come from?
FeCo3O8 data is cross-referenced from materials_project, mpaloe, jarvis.
Explore
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).
- mpaloe — Data from mpaloe.
- jarvis — Data from JARVIS (NIST). Cite: Choudhary et al., npj Comp. Mater. 6, 173 (2020).
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