Barium Fluoride
BaF2
|
Chemical name
Barium Fluoride |
|
Chemical formula
BaF2 |
|
Melting point [°C]
1386 |
|
Crystal system
cubic |
|
Unit cell
a [Å]:6,20 b [Å]:6,20 c [Å]:6,20 |
|
Molecular weight [g/mol]
175.3368 |
|
Density [g/cm3]
4.89 |
|
Cleavage
(111) cleavage plane |
|
Color
black to brown |
|
Refractive Index
n0=1.6654; ne=1.4898 at 509 nm |
|
Other
CaF2 type structure, application as scintillation material /
correction part in lens systems; radiation resistant,
susceptible to thermal shock laser damage threshold: 27.5 GW/cm^2 at 3.8 μm, 75 ns pulse length |
|
Piezoelectric crystals
|
|
Termal conductivity [W/m/K]
11.72 (at 13°C) |
|
Thermal expansation coefficient [(10^(-5))/K]
1.81 (at - 110 - 120 °C) |
|
Specific heat [J/(kg*K)]
410 (at 27 °C) |
|
Dielectric constant
7.33 (at f = 2 MHz) |
|
Transmission range
0.15 - 15 μm |
|
Solubility in water
0.17g / 100g (at 23 °C) |
|
Hardness (Knoop)
82 (indenter load: 500g) |
|
Young's modulus [GPa]
56.4 |
|
Bulk modulus [GPa]
268.89 |
|
Shear modulus [GPa]
25.4 |
|
Rupture modulus [MPa]
26.2 |
|
Elastic coefficient
C11 = 90.4; C12 = 40.6; C44 = 25.3 Gpa |
