Cu8Ho8O20
Cu8Ho8O20 is a metastable, semiconducting spinel oxide containing copper and holmium that is primarily studied for its potential catalytic utility.
About Cu8Ho8O20
Cu8Ho8O20 is a complex spinel oxide characterized by its semiconducting electronic nature. As a metastable phase, it represents a specialized configuration within the broader family of transition metal and rare-earth oxide catalysts, offering distinct coordination environments for surface-active processes. Its structural complexity makes it a subject of interest for researchers investigating non-equilibrium material phases.
This compound functions as a specialized catalytic material where its electronic properties are leveraged for chemical transformations. By incorporating both copper and holmium, it provides a unique metallic landscape that differs from simpler binary oxides, making it a valuable addition to the study of high-order spinel-related architectures.
Key Properties
Cross-validated computational properties for Cu8Ho8O20, 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 Cu8Ho8O20, 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. |
|---|---|---|---|---|---|
| Pna21 (No. 33) | orthorhombic | 0.14 | 0.0457 | -7.292 | 7.46 |
| Pna21 (No. 33) | — | — | — | — | — |
| — | — | — | — | — | 7.46 |
Applications
Where Cu8Ho8O20 is used.
Frequently Asked Questions
Common questions about Cu8Ho8O20, answered from cross-validated data.
What is Cu8Ho8O20?
Cu8Ho8O20 is a metastable, semiconducting spinel oxide containing copper and holmium that is primarily studied for its potential catalytic utility.
What is Cu8Ho8O20 used for?
What is the band gap of Cu8Ho8O20?
Is Cu8Ho8O20 a metal, semiconductor, or insulator?
Is Cu8Ho8O20 thermodynamically stable?
What is the crystal structure of Cu8Ho8O20?
What is the density of Cu8Ho8O20?
How many polymorphs of Cu8Ho8O20 are known?
What elements does Cu8Ho8O20 contain?
Where does the data for Cu8Ho8O20 come from?
How It Compares
Within the spinel oxide catalysts class.
Unlike simple binary oxides such as CuO, NiO, or ZnO, which are widely utilized for their robust and well-understood catalytic properties, Cu8Ho8O20 represents a more intricate, metastable structural arrangement. While materials like MgAl2O4 serve as standard structural templates for spinels, this copper-holmium variant offers a more specialized electronic profile compared to the perovskite-structured oxides like LaMnO3 or LaAlO3, positioning it as a niche candidate for targeted catalytic applications.
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).
Analyze Cu8Ho8O20 in the Lattice Graph platform
Polymorph comparison, confidence scoring, supply-chain risk, and patent monitoring — across 53 integrated data sources.
Explore the Platform →