Optical and spectral properties | |
---|---|
Transmission range in µm (minimum 10%) | 0,12‐9,6 |
Transmission range in µm (minimum 50%) | 0,12‐8,5 |
Refractive index @633nm | 1,375 (no) 1,389 (neo) |
Reflection losses in % at 1 surface | 2,52 @633nm
|
Reflection losses, % for two surfaces | 11,2 @120nm
|
dN/dT in 1/K | 2,3 · 10-6 (parallel) 1,7 · 10-6 (perpendicular) @400nm |
Physical properties | |
---|---|
Density in g/cm3 | 3,177 |
Melting point in °C | 1255 |
Specific heat capacity in J/(kg · K) | 1004
|
Thermal conductivity in W/(m · K) | 21 (parallel) 33,6 (senkrecht) @300K |
Thermal expansion in 1/K | 13,7 · 10-6 (parallel) 8,9 · 10-6 (perpendicular) |
Dielectric constant | 4,87 (parallel) 5.45 (perpendicular) |
Solubility in water in g/100g | 2 · 10-4 @0-60°C |
Mohs hardness | 6
|
Knoop hardness in kg/mm² | 415
|
Material type | single crystalline, synthetic
|
Crystal type | tetragonal |
Crystal structure | tP6
|
Lattice constant in Å | a = 4,0623 c = 3,053 |
Elastic coefficient in GPa | C11 = 138 C12 = 88 C13 = 62 C33 = 201 C44 = 56,5 C66 = 98,6 |
Young's Modulus (E) in Gpa | 138,55
|
Shear Modulus (G) in GPa | 54,66 |
Bulk Modulus (K) in GPa | 101,32 |
Rupture Modulus in MPa | 60
|
Apparent elastic limit in MPa | 49,6
|
Poisson's ratio | 0,276 |
Spectral properties |
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sample thickness: 2 mm |
Optical Properties | |
---|---|
Transmission range in µm @10% min. | 0.12 - 9.6 |
Transmission range in µm @50% min. | 0.12 - 8.5 |
Refractive index @ 633nm | 1.375 (no) 1.389 (neo) |
Reflection losses in % at 1 surface | 2.52 @ 633nm |
Reflection losses in % at 2 surfaces | 11.2 @ 120nm |
dn/dT in 1/K | 2.3 · 10-6 (parallel c-axis) 1.7 · 10-6 (perpendicular c-axis) |
Physical Properties | |
---|---|
Density in g/cm³ | 3.177 |
Melting point in °C | 1255 |
Specific heat capacity in J/(kg · K) | 1004 |
Thermal Conductivity in W/(m · K) | 21 (parallel) @300K 33.6 (perpendicular) @300K |
Thermal Expansion in 1/K | 13.7 · 10-6 (parallel) 8.9 · 10-6 (perpendicular) |
Dielectric constant | 4.87 (parallel) 5.45 (perpendicular) |
Solubility in water in g/100g | 2 · 10-4 @ 0-60°C |
Mohs hardness | 6 |
Knoop hardness in kg/mm² | 415 |
Material type | Single crystal, synthetic |
Crystal type | tetragonal |
Crystal structure | tP6 |
Lattice constant in Å | a = 4.0623 c = 3.053 |
Elastic coeficients in GPa | C11 = 138 C12 = 88 C13 = 62 C33 = 301 C44 = 56.5 C66 = 95.5 |
Young's Modulus (E) in GPa | 138.55 |
Shear Modulus (G) in GPa | 54.66 |
Bulk Modulus (K) in GPa | 101.32 |
Rupture Modulus in MPa | 60 |
Apparent elastic limit in MPa | 49.6 |
Poisson ratio | 0.276 |
Spectral Properties | |
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