Er8Te12
Er8Te12 is a stable semimetallic binary compound formed from erbium and tellurium.
About Er8Te12
Er8Te12 is a binary inorganic compound composed of erbium and tellurium. As a thermodynamically stable phase located on the convex hull, it represents a robust structural arrangement within the rare-earth chalcogenide family. Its electronic character is defined as near-zero-gap, placing it in the semimetallic regime where conduction properties are highly sensitive to its specific atomic configuration.
This material is notable for its structural diversity, supported by multiple reported entries across major materials databases. Its stability and electronic nature make it a subject of interest for researchers investigating the fundamental interactions between rare-earth elements and chalcogens in complex crystalline lattices.
Key Properties
Cross-validated computational properties for Er8Te12, 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 Er8Te12, 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 | 0.05 | 0.0000 | -30.465 | 6.95 |
| — | — | — | — | — | 6.91 |
| — | — | — | — | — | 6.91 |
| Fddd (No. 70) | — | — | — | — | — |
Frequently Asked Questions
Common questions about Er8Te12, answered from cross-validated data.
What is Er8Te12?
Er8Te12 is a stable semimetallic binary compound formed from erbium and tellurium.
What is the band gap of Er8Te12?
Is Er8Te12 a metal, semiconductor, or insulator?
Is Er8Te12 thermodynamically stable?
What is the crystal structure of Er8Te12?
What is the density of Er8Te12?
How many polymorphs of Er8Te12 are known?
What elements does Er8Te12 contain?
Where does the data for Er8Te12 come from?
How It Compares
As a thermodynamically stable binary compound, Er8Te12 serves as a foundational reference point for understanding the phase behavior of erbium-tellurium systems. It occupies a distinct position in the landscape of rare-earth tellurides, where its semimetallic electronic character distinguishes it from more insulating or metallic counterparts found in related binary series.
Data sources & attribution
- materials_project — Data from the Materials Project. Cite: Jain et al., APL Materials 1, 011002 (2013).
- omat24 — Data from OMat24 (Meta FAIR). Cite: Barroso-Luque et al., arXiv 2410.12771 (2024).
- aflow — Data from AFLOW. Cite: Curtarolo et al., Comp. Mater. Sci. 58, 218 (2012).
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