CaFe2O4
calcium ferrite · calcium iron oxide
Calcium ferrite is a mixed metal oxide that serves as an important mineral phase in various industrial processes. It is frequently studied for its magnetic properties and its role in the processing of iron ores.
Key Properties
Cross-validated computational properties for calcium ferrite, 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.
Cross-Source DFT Agreement
How well independent DFT databases agree on the thermodynamics of CaFe2O4. Tight agreement means computed properties can be trusted without re-running calculations.
Agreement ScoreA normalized confidence score summarizing how closely independent DFT databases agree. Higher scores mean tighter cross-source agreement.
Hull SpreadDifference between the highest and lowest energy-above-hull values reported by comparable sources. Smaller spread means less thermodynamic disagreement.
Sources ComparedNumber and names of computational sources with comparable entries for this formula.
Space Group ConsensusWhether independent sources predict the same crystal symmetry for the lowest-energy structure.
Reported Structures
Lowest-energy structures reported for CaFe2O4, 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. |
|---|---|---|---|---|---|
| No. 0 | unknown | — | — | — | 1.07 |
| — | — | — | — | — | 3.62 |
| P4/mmm (No. 123) | — | — | — | — | — |
| Cm (No. 8) | — | — | — | — | — |
| Cmcm (No. 63) | — | — | — | — | — |
| R3m (No. 160) | — | — | — | — | — |
| Imma (No. 74) | — | — | — | — | — |
| — | — | — | — | — | — |
Synthesis Routes
Literature-extracted synthesis procedures targeting CaFe2O4.
Applications
Where calcium ferrite is used.
Frequently Asked Questions
Common questions about calcium ferrite, answered from cross-validated data.
What is CaFe2O4?
Calcium ferrite is a mixed metal oxide that serves as an important mineral phase in various industrial processes. It is frequently studied for its magnetic properties and its role in the processing of iron ores.
What is CaFe2O4 used for?
What is the band gap of CaFe2O4?
Is CaFe2O4 a metal, semiconductor, or insulator?
What is the crystal structure of CaFe2O4?
What is the density of CaFe2O4?
How many polymorphs of CaFe2O4 are known?
How is CaFe2O4 synthesized?
What elements does CaFe2O4 contain?
Where does the data for CaFe2O4 come from?
Related Compounds
Other Oxide Oxygen-Evolution Catalysts in the database.
Data sources & attribution
- cod — Data from the Crystallography Open Database. Cite: Grazulis et al., Nucleic Acids Res. 40, D420 (2012).
- omat24 — Data from OMat24 (Meta FAIR). Cite: Barroso-Luque et al., arXiv 2410.12771 (2024).
- jarvis — Data from JARVIS (NIST). Cite: Choudhary et al., npj Comp. Mater. 6, 173 (2020).
- alexandria — Data from alexandria.
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