Be₄TeO₇ is an advanced oxide ceramic compound combining beryllium and tellurium oxides, representing a specialized material within the family of complex metal tellurites. While primarily a research compound rather than a high-volume industrial material, beryllium tellurate ceramics are investigated for applications requiring combinations of thermal stability, optical transparency, and structural rigidity in demanding environments. This material family shows particular promise in specialized optics, high-temperature applications, and advanced sensor systems where conventional ceramics face limitations.
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| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Bulk Modulus(K) | 27,262.7 | ksi | — | ||
Poisson's Ratio(ν) | 0.2500 | - | — | ||
Shear Modulus(G) | 16,931.7 | ksi | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Density(ρ) | 0.1477 | lb/in³ | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Band Gap(Eg) | 1.467 | eV | — | ||
Dielectric Constant (Relative Permittivity)(εr)2 entries | 7.487 | - | — | ||
| ↳ | 5.495 range 3.468–7.522median of 2 measurements | - | — | ||
Magnetic Moment(μB) | 0.000 | µB | — | ||
Piezoelectric Modulus(eij)2 entries | 0.03639 | C/m² | — | ||
| ↳ | 0.3821 | C/m² | — | ||
Piezoelectric Stress Tensor(eij) | Matrix (redacted) | C/m² | — | ||
Seebeck Coefficient(S) | -93.62 | µV/K | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Energy Above Hull(ΔEhull) | 0.000 | eV/atom | — | ||
Formation Energy(ΔHf) | -2.366 | eV/atom | — |