Mg4O20Te8
Mg4O20Te8 is a semiconducting magnesium tellurate compound that is considered a viable target for laboratory synthesis.
About Mg4O20Te8
Mg4O20Te8 is a complex magnesium-based tellurate that exhibits semiconducting electronic behavior. Its structural arrangement reflects a delicate balance of ionic and covalent interactions, positioning it as a material of interest for fundamental solid-state investigations.
As a near-hull compound, it is considered a promising candidate for experimental synthesis. The existence of multiple reported structural variations across databases underscores its versatility and the potential for tuning its properties through precise processing conditions.
Key Properties
Cross-validated computational properties for Mg4O20Te8, 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 Mg4O20Te8, 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. |
|---|---|---|---|---|---|
| Pbcn (No. 60) | orthorhombic | 2.49 | 0.0075 | -6.024 | 5.15 |
| No. 0 | unknown | — | — | — | 0.35 |
| Pbcn (No. 60) | — | — | — | — | — |
| — | — | — | — | — | 3.96 |
| Pbcn (No. 60) | — | — | — | — | — |
Applications
Where Mg4O20Te8 is used.
Frequently Asked Questions
Common questions about Mg4O20Te8, answered from cross-validated data.
What is Mg4O20Te8?
Mg4O20Te8 is a semiconducting magnesium tellurate compound that is considered a viable target for laboratory synthesis.
What is Mg4O20Te8 used for?
What is the band gap of Mg4O20Te8?
Is Mg4O20Te8 a metal, semiconductor, or insulator?
Is Mg4O20Te8 thermodynamically stable?
What is the crystal structure of Mg4O20Te8?
What is the density of Mg4O20Te8?
How many polymorphs of Mg4O20Te8 are known?
What elements does Mg4O20Te8 contain?
Where does the data for Mg4O20Te8 come from?
How It Compares
As an unclassified complex oxide, Mg4O20Te8 occupies a unique niche in materials science. Without direct structural siblings in this specific category, it serves as a distinct example of how magnesium and tellurium can organize into stable, semiconducting frameworks, providing a benchmark for future discovery in the broader tellurate family.
Data sources & attribution
- materials_project — Data from the Materials Project. Cite: Jain et al., APL Materials 1, 011002 (2013).
- cod — Data from the Crystallography Open Database. Cite: Grazulis et al., Nucleic Acids Res. 40, D420 (2012).
- aflow — Data from AFLOW. Cite: Curtarolo et al., Comp. Mater. Sci. 58, 218 (2012).
- omat24 — Data from OMat24 (Meta FAIR). Cite: Barroso-Luque et al., arXiv 2410.12771 (2024).
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