CE1848 Cerium Hexaboride Cathodes(CeB6/CeBix cathodes)

Catalog No. CE1848
Shape Standard/top hats/customized
Color Blue
Density 4.8g/cm3
Melting Point 2552℃
Crystal Structure Cubic
Molecular Weight 204.98

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.

Related products: Cerium (III) Acetate, Cerium (III) Oxalate, Cerium (III) Carbonates

Description of Cerium Hexaboride Cathodes

The cerium hexaboride (CeB6) cathode has the advantages 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.

Comparing to LaB6 cathode, CeB6 cathodes have a lower evaporation rate and lower influence on current density in O2 atmosphere.

Applications of Cerium Hexaboride Cathodes

As cathodes of SEM and TEM
Electron beam lithography apparatus
Scanning Auger Spectrograph and other micro electron beam applications


Material properties of Cerium Hexaboride Cathodes

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

Yield of Finished Cathodes

>85%

Shapes:

Standard:

standard-cerium-hexaboride-cathode

Top hats:

tophats-cerium-hexaboride-cathode

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