Ho2TeO2
Ho2TeO2 is a stable, semiconducting holmium tellurium oxide known for its structural complexity.
About Ho2TeO2
Ho2TeO2 is a holmium-based tellurium oxide that exhibits semiconducting electronic behavior. As a thermodynamically stable compound residing on the convex hull, it represents a robust structural configuration within its chemical system.
This material is characterized by significant structural diversity, with multiple reported configurations across various databases. Its stability and electronic profile make it a subject of interest for researchers investigating rare-earth chalcogenide oxides for specialized functional applications.
Key Properties
Cross-validated computational properties for Ho2TeO2, 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.
Cross-Source DFT Agreement
How well independent DFT databases agree on the thermodynamics of Ho2TeO2. Tight agreement means computed properties can be trusted without re-running calculations.
Agreement ScoreA normalized confidence score summarizing how closely independent DFT databases agree. Higher scores mean tighter cross-source agreement.
Hull SpreadDifference between the highest and lowest energy-above-hull values reported by comparable sources. Smaller spread means less thermodynamic disagreement.
Sources ComparedNumber and names of computational sources with comparable entries for this formula.
Space Group ConsensusWhether independent sources predict the same crystal symmetry for the lowest-energy structure.
Reported Structures
Lowest-energy structures reported for Ho2TeO2, 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. |
|---|---|---|---|---|---|
| — | — | 1.17 | 0.0000 | -3.147 | — |
| I4/mmm (No. 139) | tetragonal | 1.00 | 0.0000 | -7.692 | 8.66 |
| P63/mmc (No. 194) | hexagonal | 0.61 | 0.0000 | -3.096 | — |
| — | — | 1.08 | 0.0007 | -3.146 | — |
| P-3m1 (No. 164) | trigonal | 0.71 | 0.0137 | -3.082 | — |
| P63/mmc (No. 194) | hexagonal | 0.61 | 0.0718 | -7.620 | 8.62 |
| — | — | 0.84 | 0.0738 | -3.073 | — |
| P-3m1 (No. 164) | trigonal | 0.58 | 0.0793 | -7.612 | 8.59 |
| — | — | 0.74 | 0.0805 | -3.067 | — |
| — | — | 0.54 | 1.7145 | -1.433 | — |
| P-3m1 (No. 164) | trigonal | — | — | — | 8.59 |
| P63/mmc (No. 194) | hexagonal | — | — | — | 8.62 |
Applications
Where Ho2TeO2 is used.
Frequently Asked Questions
Common questions about Ho2TeO2, answered from cross-validated data.
What is Ho2TeO2?
Ho2TeO2 is a stable, semiconducting holmium tellurium oxide known for its structural complexity.
What is Ho2TeO2 used for?
What is the band gap of Ho2TeO2?
Is Ho2TeO2 a metal, semiconductor, or insulator?
Is Ho2TeO2 thermodynamically stable?
What is the crystal structure of Ho2TeO2?
What is the density of Ho2TeO2?
How many polymorphs of Ho2TeO2 are known?
What elements does Ho2TeO2 contain?
Where does the data for Ho2TeO2 come from?
How It Compares
As a unique member of the holmium-tellurium-oxygen system, Ho2TeO2 serves as a foundational example of stable ternary oxides in this class. Its position on the convex hull distinguishes it as a reliable phase for study compared to metastable or high-energy configurations that may exist within the broader landscape of rare-earth tellurites.
Data sources & attribution
- oqmd — Data from the OQMD (oqmd.org). Cite: Saal et al., JOM 65, 1501 (2013); Kirklin et al., npj Comp. Mater. 1, 15010 (2015). (CC-BY-4.0)
- materials_project — Data from the Materials Project (materialsproject.org). Cite: Jain et al., APL Materials 1, 011002 (2013). (CC-BY-4.0)
- jarvis — Data from JARVIS (jarvis.nist.gov), NIST. Cite: Choudhary et al., npj Comp. Mater. 6, 173 (2020). (LicenseRef-US-Gov-PD)
- mpaloe — Data from MP-ALOE. Cite: Kuner et al., npj Comput. Mater. (2025), doi:10.1038/s41524-025-01834-9.
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