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You are here: Home / Fluoride Crystal / SrF2

Strontium Fluoride (SrF2) is one of the most important alkaline-earth fluorides. It has many physical properties, such as low energy phonon, high ionization, high resistance coefficient and good anion conductivity. It has been widely used in light-emitting devices, optical imaging, biomarkers, anion conductors and other fields. Compared with oxide and calcium fluoride, strontium fluoride has lower phonon energy, higher thermal conductivity and negative thermal optical coefficient, especially negative thermal optical coefficient, which can compensate the thermal lens effect in the process of laser oscillation. Strontium fluoride has promoted the research of optical materials and the improvement of optical instruments with its unique material structure and properties

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Parameter

Physical and Chemical Properties
Crystal StructureSingle crystal, synthetic
Crystal TypeCubic (CaF2 type)
Lattice Constants5.7996
Density4.24 g/cm3
Melting Point1477°C
Thermal Conductivity /(W·m-1·K-1@298k)1.42
Specific Heat Capacity/ (J·kg-1·K-1)544
Thermal Expansion /(10-6·K-1@293k )18.4
Hardness (Mohs)130
Young`s Modulus /(GPa)99.91
Shear Modulus /(GPa)34.6
Bulk Modulus /(GPa)24.65
Elastic Coefficient/(GPa)C11=124; C12=44; C44= 31.8
Cleavage-111
Solubility in Water/(g/100g)0.021@298K
Optical characteristics
Transmission Range (50%)0.14 … 9µm @thickness 2mm  
Refractive Index  1.436914@633nm 
Reflective Loss 1.74% @10 µm  
Poisson Ratio0.29
Dielectric Constant7.69@2MHz
Reststrahlen40µm
Index of Refraction

Spectrum

Feature
Application
Literature
Feature
  • Poorly soluble in water, ethanol and methanol
  • High conductivity and optical properties similar to calcium fluoride
  • Can transmit ultraviolet and infrared waves
  • Very dangerous to the health, poisonous when inhaled or ingested and in low concentration can cause irritation to skin and eyes.
  • Not flammable
Application
  • UV and VUV spectroscopy
  • Manufacture optical materials for different devices, like glasses, windows and lenses
  • Intermediate infrared laser matrix material
Literature
Effect of Yb 3+ ions on structural and NIR emission of SrF 2 :Eu 2+ /Pr 3+ down-conversion containing Na + ions
In vitro biodegradability–bioactivity–biocompatibility and antibacterial properties of SrF 2 nanoparticles synthesized by one-pot and eco-friendly method based on ternary strontium chloride-choline chloride-water deep eutectic system
Thermoluminescence dosimetry features of DY and Cu doped SrF 2 nanoparticles under gamma irradiation
Effect of Yb 3þ concentration on microstructure and optical properties of Yb: SrF 2  transparent ceramics
Electrochemical performance of SrF2-coated LiMn204 cathode material for Li-ion batteries
Preparation, kinetic analysis and thermoluminescent dosimetry features of highly sensitive SrF 2 :Dy phosphor
The synergistic effects of SrF 2 nanoparticles, YSZ nanoparticles, and poly-ε- L -lysin on physicomechanical, ion release, and antibacterial-cellular behavior of the flowable dental composites
Infrared-laser precipitation of Dy 3+ -Yb 3+ codoped SrF 2 nanocrystals in glass and upconversion luminescence
Low temperature photoluminescence study of Ce 3+ and Eu 2+ ions doped SrF 2 nanocrystals
Application of Judd–Ofelt theory in analyzing Nd 3+ doped SrF 2 and CaF 2 transparent ceramics

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