Dy4O56P20
Dy4O56P20 is a thermodynamically stable, insulating dysprosium phosphate compound known for its structural complexity.
About Dy4O56P20
Dy4O56P20 is a complex dysprosium-based phosphate compound characterized by its insulating electronic nature. As a thermodynamically stable phase residing on the convex hull, it represents a robust configuration within the dysprosium-oxygen-phosphorus system.
The material is primarily significant for its structural diversity, with multiple reported configurations across various databases. Its stability and insulating properties make it a subject of interest for fundamental studies in inorganic chemistry and solid-state materials science.
Key Properties
Cross-validated computational properties for Dy4O56P20, 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 Dy4O56P20, 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/c (No. 15) | monoclinic | 5.45 | 0.0000 | -7.880 | 3.53 |
| Pnma (No. 62) | orthorhombic | 5.43 | 0.0091 | -7.871 | 3.50 |
| P21/c (No. 14) | monoclinic | 5.60 | 0.0125 | -7.868 | 3.51 |
| C2/c (No. 15) | — | — | — | — | — |
| — | — | — | — | — | 3.47 |
| — | — | — | — | — | 3.47 |
Applications
Where Dy4O56P20 is used.
Frequently Asked Questions
Common questions about Dy4O56P20, answered from cross-validated data.
What is Dy4O56P20?
Dy4O56P20 is a thermodynamically stable, insulating dysprosium phosphate compound known for its structural complexity.
What is Dy4O56P20 used for?
What is the band gap of Dy4O56P20?
Is Dy4O56P20 a metal, semiconductor, or insulator?
Is Dy4O56P20 thermodynamically stable?
What is the crystal structure of Dy4O56P20?
What is the density of Dy4O56P20?
How many polymorphs of Dy4O56P20 are known?
What elements does Dy4O56P20 contain?
Where does the data for Dy4O56P20 come from?
How It Compares
As a unique member of the dysprosium phosphate family, Dy4O56P20 serves as a benchmark for structural stability. While it currently stands as a distinct entity in its class, its position on the convex hull highlights its role as a stable reference point for understanding the phase space of rare-earth phosphates.
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).
- omat24 — Data from OMat24 (Meta FAIR). Cite: Barroso-Luque et al., arXiv 2410.12771 (2024).
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