Er2TeO6
Er2TeO6 is a stable, wide-gap insulating oxide containing erbium, tellurium, and oxygen.
About Er2TeO6
Er2TeO6 is a complex oxide composed of erbium, tellurium, and oxygen. As a thermodynamically stable phase located on the convex hull, it represents a robust crystalline arrangement that maintains structural integrity under standard conditions. Its electronic character is defined by a wide band gap, classifying it as an insulator with significant potential for specialized dielectric or optical applications. The compound has been identified across multiple structural databases, reflecting its status as a well-documented material in contemporary solid-state research. Its ability to form stable configurations makes it a subject of interest for researchers investigating rare-earth tellurite systems and their unique coordination environments.
Key Properties
Cross-validated computational properties for Er2TeO6, 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 Er2TeO6, 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. |
|---|---|---|---|---|---|
| P212121 (No. 19) | orthorhombic | 3.18 | 0.0000 | -7.701 | 8.06 |
| P321 (No. 150) | trigonal | 3.03 | 0.0066 | -7.694 | 7.78 |
| P42/mnm (No. 136) | tetragonal | 2.45 | 0.0542 | -7.647 | 7.49 |
| P42/mnm (No. 136) | — | — | — | — | — |
| P42/mnm (No. 136) | Tetragonal | — | — | — | 7.49 |
| P42/mnm (No. 136) | Tetragonal | — | — | — | 8.06 |
| P321 (No. 150) | Trigonal | — | — | — | 7.94 |
| P321 (No. 150) | Trigonal | — | — | — | 7.66 |
| P42/mnm (No. 136) | Tetragonal | — | — | — | 7.72 |
| P321 (No. 150) | Trigonal | — | — | — | 7.46 |
Applications
Where Er2TeO6 is used.
Frequently Asked Questions
Common questions about Er2TeO6, answered from cross-validated data.
What is Er2TeO6?
Er2TeO6 is a stable, wide-gap insulating oxide containing erbium, tellurium, and oxygen.
What is Er2TeO6 used for?
What is the band gap of Er2TeO6?
Is Er2TeO6 a metal, semiconductor, or insulator?
Is Er2TeO6 thermodynamically stable?
What is the crystal structure of Er2TeO6?
What is the density of Er2TeO6?
How many polymorphs of Er2TeO6 are known?
What elements does Er2TeO6 contain?
Where does the data for Er2TeO6 come from?
How It Compares
As a distinct oxide phase, Er2TeO6 serves as a representative example of stable rare-earth tellurite compounds. While it shares the general insulating characteristics common to many complex oxides, its specific stoichiometry and structural stability distinguish it from simpler binary systems, positioning it as a foundational material for exploring complex lattice dynamics in the absence of other closely related siblings in this specific dataset.
Data sources & attribution
- materials_project — Data from the Materials Project. Cite: Jain et al., APL Materials 1, 011002 (2013).
- jarvis — Data from JARVIS (NIST). Cite: Choudhary et al., npj Comp. Mater. 6, 173 (2020).
- mpaloe — Data from mpaloe.
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