Huizhou Tianyi rare material Co., Ltd

About TYR
Product classification
  Sputtering Target
  Rare Earth Material
  Evaporation Material
  Chemical Reagent
  High Pure Metals
  Compounds
Product Details

Barium fluoride, BaF2 crystal

Shape: shots,pellets,pieces,granules,rods,tablets

Spec.:

Tablets: 8mm dia. X 5mm L, 10mm dia. X 5mm L, 20mm dia. X 8mm L e.t.c

Pieces, Granules: 1-2.5mm, 3-6mm, 3-8mm, 1-3mm, 3-12mm e.t.c

BaF2is relatively hard but is highly sensitive to thermal shock. For its transmission range is 0.2 μm - 11 μm, the material is widely used for making optical windows, lenses and prisms in UV-IR spectra. Besides it can also be used as substrate for some applications. BaF2is less resistant to attack by water than CaF2. Pronounced water attack occurs at 500 °C, but in a dry environment the material can be used up to 800 °C. BaF2is grown by modified Bridgman technique. Maximum available size: Dia 200 mm x Thickness 50 mm. In addition, BaF2 is usually used as scintillator for gamma detection. It is the fastest scintillating crystals up to now.

BaF2 crystals have the following exceptional properties that make it a very important optics single crystal:
(1) High optical transmittance from the ultraviolet to the far-infrared spectrum region(0.18-12μm).
(2) Used for Optical prisms, lenses, wedges, windows, other optical components, and etc.

 

Main Specifications:

Maximum Size

Single Crystal: φ100×100 mm
Poly Crystal:φ200×100 mm (3 ~7 boundaries)

Dimension Tolerance

± 0.1mm

Flatness Tolerance

λ~ λ/10 at 632.8 nm over central 90% of edge dimensional

Parallelism

±1 arc sec ~ ±3 arc min

Surface Quality (Scratch/Dig)

10/5


Physical and Optical Properties:

Transmission Range (mm)

0.15 ~12.5

Refractive Index (within 0.26~12.00 mm)

1.5122~1.3703

Reflection Loss at 10.35 mm

5.3% (2 surfaces)

Absorption Coefficient at 6mm (cm-1)

3.2×10-4

Density (g/cm3)

4.89 at 20°C

Melting Point (°C)

<1280

Thermal Conductivity at 286K (Wm-1K-1)

11.72

Thermal Expansion at 273K (K-1)

18.1×10-6

Knoop Hardness

82kg/mm2

Hardness (Mho)

3

Specific Heat (J Kgm-1K-1)

410

Dielectric Constant at 1MHz

7.33

Elastic Coefficients

C11= 89.2 C12 = 40.0 C44= 25.4

Apparent Elastic Limit (Mpa)

26.9 (3900psi)

Possion Ratio

0.343

Solubility in 100g water at 23°C (g)

0.17

Crystal type

cubic, Class m3m

Cleavage

(111)

 

We also supply below material:

Material Name Formula Purity Form
Aluminum Fluoride AlF3 99.9% Ceramic, Crystal
Yttrium Fluoride YbF3 99.99% Ceramic
Lanthanum Fluoride LaF3 99.99% Ceramic
Yttrium Fluoride YF3 99.9% Ceramic
Cerium Fluoride CeF3 99.99% Ceramic
Magnesium Fluoride MgF2 99.99% Crystal
Praseodymium Fluoride PrF3 99.9% Ceramic
Barium Fluoride BaF2 99.99% Ceramic, Crystal
Lithium Fluoride LiF 99.99% Crystal
Sodium Fluoride NaF 99.9% Ceramic, Crystal
Strontium Fluoride SrF2 99.9% Ceramic
Lead Fluoride PbF2 99.99% Ceramic, Crystal
Erbium Fluoride ErF3 99.9% Ceramic

 

 

 

Product classification

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