Be4Er4Ge2O14
Be4Er4Ge2O14 is a complex, wide-gap insulating oxide containing beryllium, erbium, and germanium that is considered thermodynamically stable.
About Be4Er4Ge2O14
Be4Er4Ge2O14 is a complex oxide composed of beryllium, erbium, germanium, and oxygen. As a wide-gap insulator, it exhibits electronic properties characteristic of stable dielectric materials, making it a subject of interest for structural and optical research.
Its status as a near-hull phase suggests that it is thermodynamically favorable and likely synthesizable under appropriate laboratory conditions. The compound represents a unique intersection of rare-earth chemistry and light-element oxide frameworks, contributing to the broader understanding of multi-component ceramic systems.
Key Properties
Cross-validated computational properties for Be4Er4Ge2O14, 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 Be4Er4Ge2O14, 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. |
|---|---|---|---|---|---|
| P-421m (No. 113) | tetragonal | 4.43 | 0.0041 | -7.948 | 6.78 |
| P-421m (No. 113) | — | — | — | — | — |
| — | — | — | — | — | 5.19 |
Applications
Where Be4Er4Ge2O14 is used.
Frequently Asked Questions
Common questions about Be4Er4Ge2O14, answered from cross-validated data.
What is Be4Er4Ge2O14?
Be4Er4Ge2O14 is a complex, wide-gap insulating oxide containing beryllium, erbium, and germanium that is considered thermodynamically stable.
What is Be4Er4Ge2O14 used for?
What is the band gap of Be4Er4Ge2O14?
Is Be4Er4Ge2O14 a metal, semiconductor, or insulator?
Is Be4Er4Ge2O14 thermodynamically stable?
What is the crystal structure of Be4Er4Ge2O14?
What is the density of Be4Er4Ge2O14?
How many polymorphs of Be4Er4Ge2O14 are known?
What elements does Be4Er4Ge2O14 contain?
Where does the data for Be4Er4Ge2O14 come from?
How It Compares
As a specialized multi-element oxide, Be4Er4Ge2O14 occupies a distinct niche in materials science. While many simple binary oxides are well-characterized, this complex quaternary phase demonstrates the potential for structural diversity within insulating oxide systems, serving as a unique example of how rare-earth elements can be integrated into beryllium-germanate frameworks.
Data sources & attribution
- materials_project — Data from the Materials Project. Cite: Jain et al., APL Materials 1, 011002 (2013).
- 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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