BeS
ceramic· BeS
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.
optoelectronic semiconductorsthermal interface materialsresearch compoundshigh-temperature ceramicsaerospace thermal management
Compliance & Regulations
?Conflict Free?RoHS?REACH?TSCA?Prop 65
| 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 | — |
Verified Unverified Low confidence (<80%) Link to source
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Thermal Conductivity(k) | 90.71 | BTU/(hr·ft·°F) | — |
Verified Unverified Low confidence (<80%) Link to source
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Density(ρ) | 0.08526 | lb/in³ | — |
Verified Unverified Low confidence (<80%) Link to source
| 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 | — |
N entriesMultiple entries per property — large groups are collapsed; click a summary row to expand. Use filters above to narrow by form / heat treatment / basis.
Verified Unverified Low confidence (<80%) Link to source
| 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 | — |
N entriesMultiple entries per property — large groups are collapsed; click a summary row to expand. Use filters above to narrow by form / heat treatment / basis.
Verified Unverified Low confidence (<80%) Link to source
Regulatory Screening
Environmental
RoHS, REACH, and Prop 65 statuses are validated against official substance lists (ECHA SVHC Candidate List, OEHHA Prop 65, RoHS Annex II). Other regulations are estimated from composition and material classification. All screening is a starting point for due diligence — always verify with your supplier before making compliance decisions.