Dy2Te3
Dy2Te3 is a thermodynamically stable semiconducting compound formed from dysprosium and tellurium.
About Dy2Te3
Dy2Te3 is a stable binary compound composed of dysprosium and tellurium. As a semiconducting material, it occupies a distinct position in the landscape of lanthanide chalcogenides, characterized by its presence on the thermodynamic convex hull. Its structural diversity is highlighted by multiple reported configurations across materials databases, reflecting its complex bonding nature.
This compound is of significant interest for researchers investigating the interplay between rare-earth magnetism and semiconducting electronic behavior. Its stability makes it a reliable candidate for fundamental studies into how heavy lanthanides influence the electronic transport properties of telluride-based systems.
Key Properties
Cross-validated computational properties for Dy2Te3, 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 Dy2Te3, 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. |
|---|---|---|---|---|---|
| Fddd (No. 70) | orthorhombic | 0.55 | 0.0000 | -29.724 | 6.69 |
| P4/mmm (No. 123) | tetragonal | 0.03 | 2.8666 | -26.858 | 0.35 |
| — | — | — | — | — | — |
| Fddd (No. 70) | — | — | — | — | — |
Applications
Where Dy2Te3 is used.
Frequently Asked Questions
Common questions about Dy2Te3, answered from cross-validated data.
What is Dy2Te3?
Dy2Te3 is a thermodynamically stable semiconducting compound formed from dysprosium and tellurium.
What is Dy2Te3 used for?
What is the band gap of Dy2Te3?
Is Dy2Te3 a metal, semiconductor, or insulator?
Is Dy2Te3 thermodynamically stable?
What is the crystal structure of Dy2Te3?
What is the density of Dy2Te3?
How many polymorphs of Dy2Te3 are known?
What elements does Dy2Te3 contain?
Where does the data for Dy2Te3 come from?
How It Compares
As a member of the rare-earth telluride family, Dy2Te3 serves as a foundational example of how lanthanide-based chalcogenides maintain thermodynamic stability while exhibiting semiconducting characteristics. It represents a key data point for understanding the structural evolution of these materials as one moves through the lanthanide series.
Data sources & attribution
- materials_project — Data from the Materials Project. Cite: Jain et al., APL Materials 1, 011002 (2013).
- alexandria — Data from alexandria.
- jarvis — Data from JARVIS (NIST). Cite: Choudhary et al., npj Comp. Mater. 6, 173 (2020).
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