| Magnesium oxide (MgO) crystal and substrate | |
| Growth Method | Arc melting method |
| Crystal Structure | Cubic (a = 4.216 Å) |
| Density | 3.58g/cm3 |
| Purity | 99.95% |
| Coefficient Of Thermal Expansion | 12.8ppm/℃ |
| Dielectric Constant | nine point eight |
| Optical Transmittance | >90% (200~400nm), >98% (500~1000nm) |
| Crystal Orientation | < 100 >, < 110 >, < 111 > ± 0.5 ° or special direction |
| Size | dia2” × 0.5mm, 25 × twenty-five × 0.5mm, 15 × fifteen × 0.5mm 10 × ten × 0.5mm, 10 × five × 0.5mm, 5 × five × 0.5mm |
| Polishing | Single or double sided polishing |
| Surface Roughness | ≤5Å |
| Encapsulation | Class 100 ultra clean bag, single or multi wafer box |
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