DyTaO4
DyTaO4 is a stable, insulating rare-earth tantalate oxide known for its structural versatility.
About DyTaO4
DyTaO4 is a complex oxide composed of dysprosium, tantalum, and oxygen. As a thermodynamically stable compound residing on the convex hull, it represents a robust phase within its chemical system, characterized by a wide-band-gap insulating electronic structure.
The material exhibits significant structural diversity, with multiple reported configurations across various databases. Its insulating nature and stability make it an intriguing subject for research into high-temperature ceramics and dielectric applications where chemical robustness is paramount.
Key Properties
Cross-validated computational properties for DyTaO4, 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.
Cross-Source DFT Agreement
How well independent DFT databases agree on the thermodynamics of DyTaO4. 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 DyTaO4, 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. |
|---|---|---|---|---|---|
| P2/c (No. 13) | monoclinic | 4.05 | 0.0000 | -3.518 | — |
| P2/c (No. 13) | monoclinic | 4.00 | 0.0000 | -9.780 | 9.21 |
| — | — | 4.26 | 0.0039 | -3.554 | — |
| C2/c (No. 15) | monoclinic | 4.12 | 0.0046 | -9.775 | 9.21 |
| C2/c (No. 15) | monoclinic | 4.07 | 0.0048 | -3.513 | — |
| — | — | 4.28 | 0.0118 | -3.546 | — |
| — | — | 4.56 | 0.1064 | -3.451 | — |
| P2/c (No. 13) | monoclinic | — | — | — | 9.12 |
| P2/c (No. 13) | monoclinic | — | — | — | 8.96 |
| P2/c (No. 13) | monoclinic | — | — | — | 9.10 |
| P2/c (No. 13) | monoclinic | — | — | — | 9.42 |
| C2/c (No. 15) | monoclinic | — | — | — | 9.43 |
Applications
Where DyTaO4 is used.
Frequently Asked Questions
Common questions about DyTaO4, answered from cross-validated data.
What is DyTaO4?
DyTaO4 is a stable, insulating rare-earth tantalate oxide known for its structural versatility.
What is DyTaO4 used for?
What is the band gap of DyTaO4?
Is DyTaO4 a metal, semiconductor, or insulator?
Is DyTaO4 thermodynamically stable?
What is the crystal structure of DyTaO4?
How many polymorphs of DyTaO4 are known?
What elements does DyTaO4 contain?
Where does the data for DyTaO4 come from?
How It Compares
As a member of the rare-earth tantalate family, DyTaO4 serves as a foundational example of how lanthanide elements stabilize complex oxide lattices. It functions as a stable, insulating ceramic that highlights the structural flexibility inherent in these metal-oxide systems.
Data sources & attribution
- 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)
- 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)
- 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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