CoTe2
CoTe2 is a thermodynamically stable, metallic cobalt telluride compound known for its structural versatility and conductive properties.
About CoTe2
CoTe2 is a metallic cobalt telluride that occupies a stable position on the convex hull, indicating significant thermodynamic robustness. Its electronic character is defined by its metallic nature, lacking a band gap and exhibiting conductive behavior characteristic of transition metal chalcogenides. The material is highly regarded for its structural diversity, supported by an extensive body of reported data across multiple databases. This wealth of structural information makes it a focal point for researchers investigating the fundamental properties of cobalt-based binary compounds.
Key Properties
Cross-validated computational properties for CoTe2, aggregated across 4 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 CoTe2, 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. |
|---|---|---|---|---|---|
| Pnnm (No. 58) | orthorhombic | 0.00 | 0.0000 | -21.541 | 7.79 |
| P-3m1 (No. 164) | trigonal | 0.00 | 0.0192 | -21.522 | 7.58 |
| Pa-3 (No. 205) | cubic | 0.00 | 0.0236 | -21.518 | 8.10 |
| Pa-3 (No. 205) | Cubic | — | — | — | 8.30 |
| Pnnm (No. 58) | — | — | — | — | — |
| Pnnm (No. 58) | — | — | — | — | — |
| Cmcm (No. 63) | Orthorhombic | — | — | — | 10.24 |
| C2/m (No. 12) | Monoclinic | — | — | — | 5.04 |
| C2/m (No. 12) | Monoclinic | — | — | — | 7.14 |
| P-1 (No. 2) | Triclinic | — | — | — | 11.11 |
| P-1 (No. 2) | Triclinic | — | — | — | 5.43 |
| P-1 (No. 2) | Triclinic | — | — | — | 7.58 |
Applications
Where CoTe2 is used.
Frequently Asked Questions
Common questions about CoTe2, answered from cross-validated data.
What is CoTe2?
CoTe2 is a thermodynamically stable, metallic cobalt telluride compound known for its structural versatility and conductive properties.
What is CoTe2 used for?
What is the band gap of CoTe2?
Is CoTe2 a metal, semiconductor, or insulator?
Is CoTe2 thermodynamically stable?
What is the crystal structure of CoTe2?
What is the density of CoTe2?
How many polymorphs of CoTe2 are known?
What elements does CoTe2 contain?
Where does the data for CoTe2 come from?
How It Compares
As a standalone representative of its class in this context, CoTe2 serves as a primary reference point for studying the stability and electronic behavior of cobalt tellurides. Its position on the convex hull establishes it as a baseline for comparing the thermodynamic viability of other related binary chalcogenide phases.
Data sources & attribution
- materials_project — Data from the Materials Project. Cite: Jain et al., APL Materials 1, 011002 (2013).
- mpaloe — Data from mpaloe.
- jarvis — Data from JARVIS (NIST). Cite: Choudhary et al., npj Comp. Mater. 6, 173 (2020).
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