Cerium Hexaboride Cathode, also called CeBix cathodes, has been highly reputed as an electron source for electron microscopes. Contact us for your custom cathode requests.
The cerium hexaboride (CeB6) cathode has the advantage of high current emission density, the unique properties of cerium hexaboride crystals provide a stable electron-emitting medium with a work function of less than 2.6 eV. The low work function produces a higher current at lower cathode temperatures, which means higher brightness or current in the beam, and longer CeB6 cathode life.
Compared to the LaB6 cathodes, CeB6 cathodes have a lower evaporation rate and lower influence on current density in the O2 atmosphere.
|
Stoichiometry |
~6 |
|
Density(g/cm3) |
4.80g/cm3 |
|
Electrical Resistivity |
~65uΩ-cm |
|
Effective Work Function at 1800K |
2.65eV |
|
Spectral Emissivity at 0.65microns |
0.779 |
|
Orientation Limit for Specific Orientation |
＜2 degrees |
|
Clamping Pressure of SMVM |
34.5MPa |
|
The yield of Finished Cathodes |
＞85% |
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