La4O8Zn2
La4O8Zn2 is a metastable, wide-gap insulating oxide material primarily researched for its potential applications in specialized catalytic processes.
About La4O8Zn2
La4O8Zn2 is a complex oxide belonging to the broader family of spinel-related materials. Characterized by its wide-gap insulating electronic nature, this compound represents a specialized structural arrangement within the lanthanum-zinc-oxygen system. Its metastable state makes it a subject of significant interest for researchers exploring non-equilibrium phases in material synthesis.
Because of its distinct electronic and structural profile, this compound is primarily investigated for its potential utility in catalytic applications. It serves as a unique platform for understanding how rare-earth elements and transition metals interact within a rigid oxide framework to influence surface reactivity and chemical transformation processes.
Key Properties
Cross-validated computational properties for La4O8Zn2, 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 La4O8Zn2, 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. |
|---|---|---|---|---|---|
| Pnma (No. 62) | orthorhombic | 3.27 | 0.0324 | -7.666 | 5.52 |
| Fd-3m (No. 227) | — | — | — | — | — |
| — | — | — | — | — | 5.78 |
Applications
Where La4O8Zn2 is used.
Frequently Asked Questions
Common questions about La4O8Zn2, answered from cross-validated data.
What is La4O8Zn2?
La4O8Zn2 is a metastable, wide-gap insulating oxide material primarily researched for its potential applications in specialized catalytic processes.
What is La4O8Zn2 used for?
What is the band gap of La4O8Zn2?
Is La4O8Zn2 a metal, semiconductor, or insulator?
Is La4O8Zn2 thermodynamically stable?
What is the crystal structure of La4O8Zn2?
What is the density of La4O8Zn2?
How many polymorphs of La4O8Zn2 are known?
What elements does La4O8Zn2 contain?
Where does the data for La4O8Zn2 come from?
How It Compares
Within the spinel oxide catalysts class.
Within the diverse class of spinel oxides and related compounds, La4O8Zn2 occupies a niche position compared to more common, stable oxides like MgAl2O4 or simple binary oxides such as ZnO. Unlike the highly stable and widely utilized LaAlO3, this compound exhibits metastability, which distinguishes its synthesis pathways and potential reactivity from the more robust perovskite-structured lanthanum oxides.
Related Compounds
Other Spinel Oxide Catalysts in the database.
Data sources & attribution
- materials_project — Data from the Materials Project. Cite: Jain et al., APL Materials 1, 011002 (2013).
- aflow — Data from AFLOW. Cite: Curtarolo et al., Comp. Mater. Sci. 58, 218 (2012).
- omat24 — Data from OMat24 (Meta FAIR). Cite: Barroso-Luque et al., arXiv 2410.12771 (2024).
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