Lanthanum titanate  (H4)

Appearance：                  black granule 

Density：                     5.90 g/cm³

Vapor pressure：               1 Pa at 790°C      

Melting point：                1800℃

Transmittance scope：           0.4-7μ

Refractive index(500nm）：       2.13(Tsub≈300°C)

Vapour deposition temp.：        2300℃

Vapour deposition condition：     evaporated by electron gun

                              1.300℃,1.5 hour

                              2.d=2302A

                              3.APC=1.7E-2Pa

                              4. velocity:1.5-2.0A/second

Purity：          ＞99.99%

Applications：   anti-reflection film, interference filter