透射鏡片材料— Magnesium Oxide (MgO) 氧化鎂
| Transmission Range | 0,3 – 7,5μm (thickness 0,49/5,5mm) |
| Refractive Index | 1,73461 @633 nm |
| Reflection Loss | 6,6% @3 μm |
| Density | 3.585 g/cm3 |
| Melting point | 2832°C |
| Molecular Weight | 40.311 |
| Thermal Conductivity | 59 W/(m·K) @300K |
| Spec. Heat Capacity | 923.5 J/(kg·K) |
| Thermal Expansion | 11 · 10-6?/°C @300 K |
| Hardness (Mohs) | 692 (Indenter Load 600g) |
| Young’s Modulus | 248.73 GPa |
| Shear Modulus | 154.56 GPa |
| Bulk Modulus | 155 |
| Fracture Modulus | 130 MPa |
| Elastic Coefficient | C11?= 294; C12?= 93; C44?= 155 GPa |
| Dielectric Constant | 9.65 @f = 100 Hz…100 MHz, 298K |
| Solubility in Water | 0.00062 g/100g |
| Crystal Structure | Single crystal, synthetic |
| Crystal Type | cubic, NaCl type structure, a0 = 4.212 ? |
| Cleavage Planes | (100) |
| Poisson Ratio | 0.18 |
| Application | Substrates for superconductive and for pyroelectric thin films, super high temperature crucibles, window material for super high temperature furnaces, optical material |
