BeF2
ceramic· BeF2
Beryllium fluoride (BeF₂) is an inorganic ceramic compound belonging to the fluoride ceramic family, known for its exceptional optical transparency across infrared wavelengths and high chemical stability. While primarily investigated in research and specialized optical applications rather than mainstream industrial use, BeF₂ is of particular interest for infrared optics, laser windows, and high-temperature thermal applications where superior transparency and thermal durability are required. Engineers consider this material when standard optical ceramics (like sapphire or fused silica) are inadequate for IR transmission or when extreme chemical resistance combined with optical clarity is critical.
infrared optics and windowslaser componentshigh-temperature optical applicationschemical containment vesselsthermal sensor windowsresearch and development
Compliance & Regulations
?Conflict Free?RoHS?REACH?TSCA?Prop 65
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Bulk Modulus(K) | 0.000 | Pa | — | ||
Poisson's Ratio(ν) | 0.1300 | - | — | ||
Shear Modulus(G) | 0.000 | Pa | — |
Verified Unverified Low confidence (<80%) Link to source
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Density(ρ) | 1.314 | kg/m³ | — |
Verified Unverified Low confidence (<80%) Link to source
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Band Gap(Eg) | 8.033 | eV | — | ||
Dielectric Constant (Relative Permittivity)(εr)3 entries | 3.390 | - | — | ||
| ↳ | 3.418 | - | — | ||
| ↳ | 2.658 range 1.829–3.487median 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 | 0.06646 | C/m² | — | ||
| ↳ | 0.02350 | C/m² | — | ||
Piezoelectric Stress Tensor(eij) | Matrix (redacted) | C/m² | — | ||
Seebeck Coefficient(S) | -160 | 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) | 0.01120 | eV/atom | — | ||
Formation Energy(ΔHf)2 entries | -3.547 | eV/atom | — | ||
| ↳ | -3.429 | 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.