AlFeMg30O32
AlFeMg30O32 is a metastable, semiconducting mixed-metal oxide that belongs to the spinel and hexagonal ferrite family of materials.
About AlFeMg30O32
AlFeMg30O32 is a complex oxide belonging to the broader family of spinel and hexagonal ferrite materials. Characterized by its semiconducting electronic nature, this compound represents a metastable phase that highlights the intricate compositional possibilities within mixed-metal oxygen systems. Its existence across multiple reported structures underscores its role as a subject of interest in solid-state chemistry research.
Because of its unique stoichiometry, this material serves as a specialized example of how aluminum and iron integration can modify the properties of magnesium-rich oxide frameworks. While its stability is limited compared to more common ferrite phases, it remains a valuable reference point for understanding the phase space of complex transition metal oxides in advanced materials science.
Key Properties
Cross-validated computational properties for AlFeMg30O32, 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 AlFeMg30O32, 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. |
|---|---|---|---|---|---|
| P4/mmm (No. 123) | tetragonal | 0.87 | 0.0430 | -6.395 | 3.56 |
| P4/mmm (No. 123) | tetragonal | 0.00 | 0.0553 | -6.383 | 3.52 |
| P4/mmm (No. 123) | — | — | — | — | — |
| — | — | — | — | — | 2.26 |
Applications
Where AlFeMg30O32 is used.
Frequently Asked Questions
Common questions about AlFeMg30O32, answered from cross-validated data.
What is AlFeMg30O32?
AlFeMg30O32 is a metastable, semiconducting mixed-metal oxide that belongs to the spinel and hexagonal ferrite family of materials.
What is AlFeMg30O32 used for?
What is the band gap of AlFeMg30O32?
Is AlFeMg30O32 a metal, semiconductor, or insulator?
Is AlFeMg30O32 thermodynamically stable?
What is the crystal structure of AlFeMg30O32?
What is the density of AlFeMg30O32?
How many polymorphs of AlFeMg30O32 are known?
What elements does AlFeMg30O32 contain?
Where does the data for AlFeMg30O32 come from?
How It Compares
Within the spinel and hexagonal ferrites class.
Within the diverse group of ferrites and spinels, AlFeMg30O32 stands out as a highly specialized, metastable variant compared to more conventional, stable spinels like MgFe2O4 or ZnFe2O4. While compounds such as MgFe2O4 are widely utilized for their robust magnetic and electronic properties, AlFeMg30O32 occupies a more niche position, reflecting the structural complexity inherent in high-magnesium content oxide systems.
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).
- nomad — Data from NOMAD. Cite: Draxl & Scheffler, J. Phys. Mater. 2, 036001 (2019).
- omat24 — Data from OMat24 (Meta FAIR). Cite: Barroso-Luque et al., arXiv 2410.12771 (2024).
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