Fabrication and optical property of highly transparent SrF2 ceramic

Abstract Nanopowders of strontium fluoride (SrF 2 ) were synthesized by direct precipitation method. XRD and SEM analysis indicated that the powders were single phased with grains size around 20 nm. Highly transparent polycrystalline SrF 2 ceramics were fabricated by hot-pressed (HP) method at 800 °C for 2 h. The micrograph of the ceramic exhibited high relative density and the average grain size was about 1 μm. For 2 mm thickness samples, the in-line transmittances of the as-fabricated SrF 2 ceramic at 400 nm and 1200 nm were 42.93% and 82.54%, respectively.