Dy2O3
Dysprosium oxide · Dysprosia
Dysprosium oxide is a stable, insulating rare-earth compound widely used in the manufacturing of specialty glass, ceramics, and nuclear reactor components.
About Dysprosium oxide
Dysprosium oxide is a thermodynamically stable compound that serves as a primary source for dysprosium-based materials. As a wide-band-gap insulator, it exhibits excellent chemical and thermal robustness, making it a reliable choice for high-performance industrial environments. Its structural versatility is evidenced by the numerous reported crystal phases found across various databases. This compound is essential for applications requiring high magnetic susceptibility and thermal stability, often serving as a precursor for more complex functional materials. It is widely utilized in the production of specialty glasses and advanced ceramic components where its unique electronic properties are leveraged to enhance performance.
Key Properties
Cross-validated computational properties for Dysprosium oxide, aggregated across 6 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.
Cross-Source DFT Agreement
How well independent DFT databases agree on the thermodynamics of Dy2O3. Tight agreement means computed properties can be trusted without re-running calculations.
Agreement ScoreA normalized confidence score summarizing how closely independent DFT databases agree. Higher scores mean tighter cross-source agreement.
Hull SpreadDifference between the highest and lowest energy-above-hull values reported by comparable sources. Smaller spread means less thermodynamic disagreement.
Sources ComparedNumber and names of computational sources with comparable entries for this formula.
Space Group ConsensusWhether independent sources predict the same crystal symmetry for the lowest-energy structure.
Reported Structures
Lowest-energy structures reported for Dy2O3, 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. |
|---|---|---|---|---|---|
| — | — | 4.17 | 0.0000 | -3.850 | — |
| C2/m (No. 12) | monoclinic | 4.08 | 0.0000 | -3.813 | — |
| Ia-3 (No. 206) | cubic | 3.93 | 0.0000 | -8.821 | 8.33 |
| — | — | 4.16 | 0.0127 | -3.837 | — |
| P-3m1 (No. 164) | trigonal | 4.28 | 0.0176 | -3.795 | — |
| C2/m (No. 12) | monoclinic | 4.00 | 0.0279 | -8.793 | 9.06 |
| — | — | 4.15 | 0.0431 | -3.807 | — |
| P-3m1 (No. 164) | trigonal | 4.20 | 0.0456 | -8.776 | 9.21 |
| — | — | 4.41 | 0.0520 | -3.798 | — |
| — | — | 4.40 | 0.0623 | -3.788 | — |
| — | — | 2.43 | 0.1366 | -3.713 | — |
| — | — | 1.90 | 0.2095 | -3.641 | — |
Synthesis Routes
Literature-extracted synthesis procedures targeting Dy2O3.
Applications
Where Dysprosium oxide is used.
Frequently Asked Questions
Common questions about Dysprosium oxide, answered from cross-validated data.
What is Dy2O3?
Dysprosium oxide is a stable, insulating rare-earth compound widely used in the manufacturing of specialty glass, ceramics, and nuclear reactor components.
What is Dy2O3 used for?
What is the band gap of Dy2O3?
Is Dy2O3 a metal, semiconductor, or insulator?
Is Dy2O3 thermodynamically stable?
What is the crystal structure of Dy2O3?
What is the density of Dy2O3?
How many polymorphs of Dy2O3 are known?
How is Dy2O3 synthesized?
What elements does Dy2O3 contain?
Where does the data for Dy2O3 come from?
Related Research
How It Compares
As a prominent rare-earth sesquioxide, this compound represents a fundamental building block in materials science, functioning as a benchmark for stability and electronic insulation within its chemical family.
Data sources & attribution
- oqmd — Data from the OQMD (oqmd.org). Cite: Saal et al., JOM 65, 1501 (2013); Kirklin et al., npj Comp. Mater. 1, 15010 (2015). (CC-BY-4.0)
- jarvis — Data from JARVIS (jarvis.nist.gov), NIST. Cite: Choudhary et al., npj Comp. Mater. 6, 173 (2020). (LicenseRef-US-Gov-PD)
- materials_project — Data from the Materials Project (materialsproject.org). Cite: Jain et al., APL Materials 1, 011002 (2013). (CC-BY-4.0)
- aflow — Data from AFLOW (aflow.org). Cite: Curtarolo et al., Comp. Mater. Sci. 58, 218 (2012). (CC-BY-4.0)
- cod — Data from the Crystallography Open Database (crystallography.net/cod/). Cite: Grazulis et al., J. Appl. Cryst. 42, 726 (2009). (CC0-1.0)
- mpaloe — Data from MP-ALOE. Cite: Kuner et al., npj Comput. Mater. (2025), doi:10.1038/s41524-025-01834-9.
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