Beryllium sulfide (BeS) is an inorganic ceramic compound belonging to the II-VI semiconductor ceramic family, characterized by a zinc blende crystal structure. While BeS has been investigated primarily in research settings for optoelectronic and thermal management applications, it remains largely experimental rather than widely commercialized; the material is notable within its ceramic family for its combination of moderate stiffness and relatively low density, making it potentially attractive for specialized high-performance applications where beryllium's toxicity constraints can be managed.
Compliance & Regulations
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Bulk Modulus(K) | 13,861.3 | ksi | — | ||
Poisson's Ratio(ν) | 0.2100 | - | — | ||
Shear Modulus(G) | 10,222.3 | ksi | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Thermal Conductivity(k) | 90.71 | BTU/(hr·ft·°F) | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Density(ρ) | 0.08526 | lb/in³ | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Band Gap(Eg)2 entries | 4.170 | eV | — | ||
| ↳ | 3.395 | eV | — | ||
Dielectric Constant (Relative Permittivity)(εr)3 entries | 7.260 | - | — | ||
| ↳ | 7.263 | - | — | ||
| ↳ | 6.331 range 5.397–7.266median of 2 measurements | - | — | ||
Electronic Dielectric Tensor(ε∞) | Matrix (redacted) | - | — | ||
Total Dielectric Tensor(ε) | Matrix (redacted) | - | — | ||
Magnetic Moment(μB) | 0.000 | µB | — | ||
Piezoelectric Modulus(eij)2 entries | 0.1101 | C/m² | — | ||
| ↳ | 0.6293 | C/m² | — | ||
Piezoelectric Stress Tensor(eij) | Matrix (redacted) | C/m² | — | ||
Seebeck Coefficient(S) | -182 | µV/K | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Energy Above Hull(ΔEhull) | 0.03590 | eV/atom | — | ||
Formation Energy(ΔHf)2 entries | -1.214 | eV/atom | — | ||
| ↳ | -1.241 | eV/atom | — |