Dy8O28Si8
Dy8O28Si8 is a wide-band-gap insulating dysprosium silicate that is theoretically stable and potentially synthesizable for advanced material applications.
About Dy8O28Si8
Dy8O28Si8 is a complex dysprosium silicate characterized by its wide-band-gap insulating electronic profile. Its structural arrangement suggests a stable configuration that makes it a subject of interest for researchers investigating rare-earth-based oxide materials.
As a material that sits near the thermodynamic hull, it is considered a promising candidate for experimental synthesis. Its insulating nature and chemical composition position it as a potential component in specialized dielectric or optical applications where stable, high-performance oxides are required.
Key Properties
Cross-validated computational properties for Dy8O28Si8, 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 Dy8O28Si8, 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. |
|---|---|---|---|---|---|
| P-1 (No. 2) | triclinic | 4.95 | 0.0068 | -8.635 | 6.07 |
| P1 (No. 1) | triclinic | 4.53 | 0.0074 | -8.634 | 6.11 |
| P-1 (No. 2) | — | — | — | — | — |
| P-1 (No. 2) | — | — | — | — | — |
| No. 0 | unknown | — | — | — | 3.09 |
Applications
Where Dy8O28Si8 is used.
Frequently Asked Questions
Common questions about Dy8O28Si8, answered from cross-validated data.
What is Dy8O28Si8?
Dy8O28Si8 is a wide-band-gap insulating dysprosium silicate that is theoretically stable and potentially synthesizable for advanced material applications.
What is Dy8O28Si8 used for?
What is the band gap of Dy8O28Si8?
Is Dy8O28Si8 a metal, semiconductor, or insulator?
Is Dy8O28Si8 thermodynamically stable?
What is the crystal structure of Dy8O28Si8?
What is the density of Dy8O28Si8?
How many polymorphs of Dy8O28Si8 are known?
What elements does Dy8O28Si8 contain?
Where does the data for Dy8O28Si8 come from?
How It Compares
As a unique dysprosium-based silicate, this compound represents a specific structural stoichiometry within the broader family of rare-earth silicates. While it occupies a distinct place in the chemical landscape, it shares the general insulating characteristics typical of stable, highly oxidized rare-earth silicate frameworks.
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).
- cod — Data from the Crystallography Open Database. Cite: Grazulis et al., Nucleic Acids Res. 40, D420 (2012).
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