Mg2Ta2FeO8
Mg2Ta2FeO8 is a wide-band-gap insulating oxide that serves as a structurally complex member of the ferrite material class.
About Mg2Ta2FeO8
Mg2Ta2FeO8 is a complex oxide belonging to the spinel and hexagonal ferrite family. Characterized by its wide-band-gap insulating nature, this compound represents a specialized structural configuration within the broader ferrite landscape.
Its position near the thermodynamic hull suggests that it is a viable candidate for experimental synthesis. As a data-rich material with multiple reported structural variations, it serves as an important subject for understanding the interplay between magnesium, tantalum, and iron in oxide lattices.
Key Properties
Cross-validated computational properties for Mg2Ta2FeO8, 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 Mg2Ta2FeO8, 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. |
|---|---|---|---|---|---|
| C2/c (No. 15) | monoclinic | 3.67 | 0.0081 | -8.779 | 6.53 |
| C2/c (No. 15) | Monoclinic | — | — | — | 6.53 |
| C2/c (No. 15) | Monoclinic | — | — | — | 6.99 |
| C2/c (No. 15) | Monoclinic | — | — | — | 6.72 |
| C2/c (No. 15) | — | — | — | — | — |
Applications
Where Mg2Ta2FeO8 is used.
Frequently Asked Questions
Common questions about Mg2Ta2FeO8, answered from cross-validated data.
What is Mg2Ta2FeO8?
Mg2Ta2FeO8 is a wide-band-gap insulating oxide that serves as a structurally complex member of the ferrite material class.
What is Mg2Ta2FeO8 used for?
What is the band gap of Mg2Ta2FeO8?
Is Mg2Ta2FeO8 a metal, semiconductor, or insulator?
Is Mg2Ta2FeO8 thermodynamically stable?
What is the crystal structure of Mg2Ta2FeO8?
What is the density of Mg2Ta2FeO8?
How many polymorphs of Mg2Ta2FeO8 are known?
What elements does Mg2Ta2FeO8 contain?
Where does the data for Mg2Ta2FeO8 come from?
How It Compares
Within the spinel and hexagonal ferrites class.
Unlike the more common spinel ferrites such as MgFe2O4 or MnFe2O4, which are frequently studied for their magnetic properties, Mg2Ta2FeO8 incorporates tantalum to modify its electronic character. While siblings like BaFeO3 or SrFeO3 often exhibit metallic or semi-metallic behavior, this compound maintains a distinct insulating state, positioning it as a unique dielectric or structural variant compared to the more conductive perovskite-related ferrites.
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).
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