Parameter

Units

LaB6

CeB6

Stoichiometry

N/A

~ 6

Metal Impurities

ppm by wt.

< 30

Density

g/cm3

4.72

4.80

Coefficient of Thermal Expansion

α x 106

5.6

6.2

Electrical Resistivity

µΩ-cm

~ 50

~ 65

Effective Work Function (100) at 1800 K

eV

2.70

2.65

Spectral Emissivity at 0.65 microns

N/A

0.765

0.779

Evaporation rate at 1800 K  (UHV)

g/cm2/s

2.2 x 10-9

1.6 x 10-9

Orientation limit for specific orientation

degrees

< 2

Pyrolitic block mount resistance @ 1800 K

Ohms

1.45