Dy2Sb2O7
Dy2Sb2O7 is a metastable, semiconducting oxide containing dysprosium and antimony that is primarily studied for its structural and electronic properties.
About Dy2Sb2O7
Dy2Sb2O7 is a complex oxide composed of dysprosium, antimony, and oxygen. As a semiconducting material, it exhibits electronic properties that make it a subject of interest for fundamental solid-state research and potential functional applications.
Although it is classified as a metastable phase, the compound has been documented across multiple structural databases, highlighting its significance in the study of rare-earth antimonates. Its existence as a metastable structure suggests unique synthesis pathways and potential for tuning its physical characteristics.
Key Properties
Cross-validated computational properties for Dy2Sb2O7, 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 Dy2Sb2O7, 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. |
|---|---|---|---|---|---|
| P3121 (No. 152) | trigonal | 1.90 | 0.0830 | -7.561 | 7.44 |
| Imma (No. 74) | orthorhombic | 1.53 | 0.1297 | -7.515 | 7.44 |
| Fd-3m (No. 227) | cubic | 0.00 | 0.1795 | -7.465 | 7.47 |
| Fd-3m (No. 227) | — | — | — | — | — |
| Fd-3m (No. 227) | Cubic | — | — | — | 7.47 |
| Fd-3m (No. 227) | Cubic | — | — | — | 7.97 |
| Fd-3m (No. 227) | Cubic | — | — | — | 7.91 |
Applications
Where Dy2Sb2O7 is used.
Frequently Asked Questions
Common questions about Dy2Sb2O7, answered from cross-validated data.
What is Dy2Sb2O7?
Dy2Sb2O7 is a metastable, semiconducting oxide containing dysprosium and antimony that is primarily studied for its structural and electronic properties.
What is Dy2Sb2O7 used for?
What is the band gap of Dy2Sb2O7?
Is Dy2Sb2O7 a metal, semiconductor, or insulator?
Is Dy2Sb2O7 thermodynamically stable?
What is the crystal structure of Dy2Sb2O7?
What is the density of Dy2Sb2O7?
How many polymorphs of Dy2Sb2O7 are known?
What elements does Dy2Sb2O7 contain?
Where does the data for Dy2Sb2O7 come from?
How It Compares
As a rare-earth antimonate, Dy2Sb2O7 represents an intriguing entry in the broader family of complex oxides. While it lacks direct structural siblings in this specific dataset, it serves as a critical example of how dysprosium-based systems can be stabilized in specific configurations, providing a benchmark for understanding the stability limits of similar pyrochlore-related or disordered oxide frameworks.
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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