Y4Cu2O7
Y4Cu2O7 is a semiconducting copper-yttrium oxide that is studied as a metastable member of the spinel oxide catalyst family.
About Y4Cu2O7
Y4Cu2O7 is a complex copper-based oxide that functions as a semiconducting material. Its unique elemental composition places it within the broader category of spinel-related oxide catalysts, where it serves as a subject of interest for researchers investigating transition metal oxide interactions. Due to its position above the thermodynamic hull, this compound is considered metastable, making it a challenging but intriguing target for synthetic studies. Its structural complexity is highlighted by multiple reported configurations across various materials databases.
Key Properties
Cross-validated computational properties for Y4Cu2O7, 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 Y4Cu2O7, 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/m (No. 12) | monoclinic | 1.57 | 0.1043 | -8.384 | 5.58 |
| C2/m (No. 12) | — | — | — | — | — |
| C2/m (No. 12) | Monoclinic | — | — | — | 5.58 |
| C2/m (No. 12) | Monoclinic | — | — | — | 5.86 |
| C2/m (No. 12) | Monoclinic | — | — | — | 5.73 |
Applications
Where Y4Cu2O7 is used.
Frequently Asked Questions
Common questions about Y4Cu2O7, answered from cross-validated data.
What is Y4Cu2O7?
Y4Cu2O7 is a semiconducting copper-yttrium oxide that is studied as a metastable member of the spinel oxide catalyst family.
What is Y4Cu2O7 used for?
What is the band gap of Y4Cu2O7?
Is Y4Cu2O7 a metal, semiconductor, or insulator?
Is Y4Cu2O7 thermodynamically stable?
What is the crystal structure of Y4Cu2O7?
What is the density of Y4Cu2O7?
How many polymorphs of Y4Cu2O7 are known?
What elements does Y4Cu2O7 contain?
Where does the data for Y4Cu2O7 come from?
How It Compares
Within the spinel oxide catalysts class.
Unlike highly stable and widely utilized spinel catalysts such as MgAl2O4 or simple binary oxides like ZnO and CuO, Y4Cu2O7 represents a more exotic and less thermodynamically favored phase. While compounds like LaMnO3 or LaNiO3 are frequently studied for their robust catalytic and electronic properties, Y4Cu2O7 exists as a more specialized, metastable member of the class that requires specific conditions for stabilization.
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).
- jarvis — Data from JARVIS (NIST). Cite: Choudhary et al., npj Comp. Mater. 6, 173 (2020).
- mpaloe — Data from mpaloe.
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