Co2Fe4O8
cobalt iron oxide
This compound is a mixed-metal oxide belonging to the spinel group of minerals. It is primarily studied for its magnetic properties and its potential utility in catalytic processes and energy storage systems.
Overview
Key Properties
Cross-validated computational properties for Co2Fe4O8, 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.
0.14–1.55 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.
0.010 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.
Near hull (likely stable)
2 DFT sources
StructuresCount of reported calculated crystal structures for this formula, including alternate polymorphs, source databases, and observed space groups.
13
3 databases, 6 space groups
Crystallography
Reported Structures
Lowest-energy structures reported for Co2Fe4O8, 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. |
|---|---|---|---|---|---|
| Fd-3m (No. 227) | cubic | 1.55 | 0.0102 | -7.839 | 5.17 |
| Imma (No. 74) | orthorhombic | 1.23 | 0.0554 | -7.794 | 5.30 |
| C2 (No. 5) | monoclinic | 0.84 | 0.0723 | -7.777 | 5.15 |
| Cm (No. 8) | monoclinic | 0.61 | 0.0746 | -7.775 | 5.03 |
| Cm (No. 8) | monoclinic | 0.54 | 0.0802 | -7.769 | 5.02 |
| Imma (No. 74) | orthorhombic | 0.14 | 0.0950 | -7.754 | 5.20 |
| P3121 (No. 152) | trigonal | 0.66 | 0.1218 | -7.727 | 5.02 |
| I41/amd (No. 141) | tetragonal | 1.44 | 0.5001 | -7.349 | 5.30 |
| — | — | — | — | — | 5.12 |
| — | — | — | — | — | 5.12 |
| Fd-3m (No. 227) | — | — | — | — | — |
| Fd-3m (No. 227) | — | — | — | — | — |
Uses
Applications
Where Co2Fe4O8 is used.
magnetic materials researchheterogeneous catalysiselectrode materials development
Reference
Frequently Asked Questions
Common questions about Co2Fe4O8, answered from cross-validated data.
What is Co2Fe4O8?
This compound is a mixed-metal oxide belonging to the spinel group of minerals. It is primarily studied for its magnetic properties and its potential utility in catalytic processes and energy storage systems.
More questions
What is Co2Fe4O8 used for?
Co2Fe4O8 is used in magnetic materials research, heterogeneous catalysis, and electrode materials development.
What is the band gap of Co2Fe4O8?
Co2Fe4O8 has a DFT-computed band gap of 0.14–1.55 eV across 13 reported structures.
Is Co2Fe4O8 a metal, semiconductor, or insulator?
With a band gap up to 1.55 eV it is a semiconductor.
Is Co2Fe4O8 thermodynamically stable?
Co2Fe4O8 has a lowest energy above hull of 0.010 eV/atom (near hull (likely stable)).
What is the crystal structure of Co2Fe4O8?
The lowest-energy reported polymorph of Co2Fe4O8 is cubic symmetry, space group Fd-3m (No. 227).
What is the density of Co2Fe4O8?
The computed density of the ground-state structure of Co2Fe4O8 is 5.17 g/cm³.
How many polymorphs of Co2Fe4O8 are known?
13 structures of Co2Fe4O8 are reported across 3 databases, spanning 6 distinct space groups.
What elements does Co2Fe4O8 contain?
Co2Fe4O8 contains Co, Fe, and O (3 elements).
Where does the data for Co2Fe4O8 come from?
Co2Fe4O8 data is cross-referenced from materials_project, omat24, aflow.
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).
- omat24 — Data from OMat24 (Meta FAIR). Cite: Barroso-Luque et al., arXiv 2410.12771 (2024).
- aflow — Data from AFLOW. Cite: Curtarolo et al., Comp. Mater. Sci. 58, 218 (2012).
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