Dy8Se12
Dy8Se12 is a stable semiconducting dysprosium selenide compound used in materials science research.
About Dy8Se12
Dy8Se12 is a binary dysprosium selenide that exists as a thermodynamically stable phase on the convex hull. Its electronic character identifies it as a semiconductor, making it a subject of interest for fundamental studies in rare-earth chalcogenide systems.
Given its structural complexity and the multiple reported configurations found in materials databases, this compound serves as a critical reference point for understanding the bonding and electronic behavior of heavy lanthanide selenides. It is primarily utilized in academic research to probe the limits of stability in metal-rich chalcogenide frameworks.
Key Properties
Cross-validated computational properties for Dy8Se12, 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 Dy8Se12, 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. |
|---|---|---|---|---|---|
| Pnma (No. 62) | orthorhombic | 0.37 | 0.0000 | -23.542 | 7.64 |
| Pnma (No. 62) | — | — | — | — | — |
| Pnma (No. 62) | — | — | — | — | — |
| Pnma (No. 62) | — | — | — | — | — |
| — | — | — | — | — | 6.37 |
Applications
Where Dy8Se12 is used.
Frequently Asked Questions
Common questions about Dy8Se12, answered from cross-validated data.
What is Dy8Se12?
Dy8Se12 is a stable semiconducting dysprosium selenide compound used in materials science research.
What is Dy8Se12 used for?
What is the band gap of Dy8Se12?
Is Dy8Se12 a metal, semiconductor, or insulator?
Is Dy8Se12 thermodynamically stable?
What is the crystal structure of Dy8Se12?
What is the density of Dy8Se12?
How many polymorphs of Dy8Se12 are known?
What elements does Dy8Se12 contain?
Where does the data for Dy8Se12 come from?
How It Compares
As a stable binary phase, Dy8Se12 represents a well-defined point in the dysprosium-selenium composition space, serving as a benchmark for researchers investigating the electronic and structural evolution of rare-earth semiconductors.
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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