Feature: Excellent optical properties.
Applications: Optical substrate, Laser materials, Scintillators, etc.
Feature: Highly mechanical properties and anti-corrosion.
Applications: Arc tubes for H.I.D lamps, anti-corrosion material, etc.
Feature: Highly optical transparency from UV to IR region..
Applications: IR windows, Laser materials,etc.
Transparent rare-earth oxide polycrystalline ceramics can be also fabricated. (R2O3: R=Sc,Yb,Lu,Ho,Tm,Er,Dy)

Feature: Highly thermal conductivity (~55 W/mK)
Applications: substrate, Heat-sink, IR windows, etc
GOS (Gadolinium Oxy Sulfate)
