Lanthanum hexaboride (LaB6) is a refractory ceramic compound that serves as a high-performance thermionic electron emitter. It is widely used in electron microscopy, vacuum electronics, and high-energy physics applications where reliable, long-lived electron sources operating at elevated temperatures are essential. LaB6 is preferred over tungsten filaments in demanding environments because it offers superior electron emission efficiency, extended operational lifetime, and lower operating temperatures, making it the material of choice for scanning electron microscopes (SEMs), transmission electron microscopes (TEMs), and specialized vacuum devices.
Compliance & Regulations
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Density(ρ) | 4.717 | kg/m³ | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Band Gap(Eg)2 entries | 4.100 | eV | — | ||
| ↳ | 0.000 | eV | — | ||
Magnetic Moment(μB) | 0.000 | µB | — | ||
Seebeck Coefficient(S) | -0.1400 | µV/K | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Energy Above Hull(ΔEhull) | 0.000 | eV/atom | — | ||
Formation Energy(ΔHf)2 entries | -0.5928 | eV/atom | — | ||
| ↳ | -0.5838 | eV/atom | — |