Resource
Physical and optical properties
Transmission Range : |
0.43 to 5.0 μm |
Refractive Index : |
No 2.555 at 0.69μ (1)(2) |
Reflection Loss : |
30% at 2μ (2 surfaces) |
Absorption Coefficient : |
n/a |
Reststrahlen Peak : |
n/a |
dn/dT : |
n/a |
dn/dμ = 0 : |
2.81μ |
Density : |
4.26 g/cc |
Melting Point : |
1840 °C |
Thermal Conductivity : |
12.5 (para) 8.7 (perp) W m-1 K-1 |
Thermal Expansion : |
9.2 (para) 7.1 (perp) x 10-6 /°C |
Hardness : |
Knoop 879 with 500g indenter |
Specific Heat Capacity : |
711 J kg-1 K-1 |
Dielectric Constant : |
160 at 1 MHz |
Youngs Modulus (E) : |
n/a |
Shear Modulus (G) : |
n/a |
Bulk Modulus (K) : |
n/a |
Elastic Coefficients : |
C11=269;C12=177;C13=146;C33=480;C44=124 |
Apparent Elastic Limit : |
4.8 MPa (700 psi) |
Poisson Ratio : |
0.28 |
Solubility : |
Insoluble in water |
Molecular Weight : |
79.9 |
Class/Structure : |
Tetragonal, SnO2 rutile, P4/mmm |
Refractive Index
No = Ordinary Ray Ne = Extraordinary Ray
µm |
No |
Ne |
µm |
No |
Ne |
µm |
No |
Ne |
0.436 |
2.853 |
3.216 |
0.492 |
2.725 |
3.051 |
0.496 |
2.718 |
3.042 |
0.546 |
2.652 |
2.958 |
0.577 |
2.623 |
2.921 |
0.579 |
2.621 |
2.919 |
0.589 |
2.616 |
2.903 |
0.691 |
2.555 |
2.836 |
0.708 |
2.548 |
2.826 |
1.01 |
2.484 |
2.747 |
1.530 |
2.454 |
2.710 |
2.42 |
2.40 |
2.59 |
3.38 |
2.41 |
2.58 |
3.79 |
2.39 |
2.57 |
4.28 |
2.34 |
2.51 |
4.89 |
2.32 |
2.49 |
5.73 |
2.24 |
2.43 |
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Product Notes
Rutile is grown by the Czochralski method up to 25mm diameter and up to 80mm long.