Yttrium  Fluoride (YF3)

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Yttrium Fluoride (YF3) Evaporation material 

Density ---4.01 g/cm3    Purity--- 99.99% 
Properties of thin film---
      Transmission range 200 ～ 15000nm
      Refractive index at 632.8nm 1.49
Hints on evaporation---

      Evaporation with Mo boat.
      Evaporation temperature 1100 ℃
      Substrate temperature 250～300 ℃

 Melting point--- 1140 ℃      Solubility--- Insoluble in water

Shape--- solid substance, White granules

Area--- IR multiplayer (10.6u), A.R.coating etc. .It can be used in CR39 and replace of ThF4.