Sapphire Crystal (Al2O3)
Sapphire Crystal
Sapphire (Al2O3) single crystal is an excellent multifunctional material. It is resistant to high temperature and has good heat conduction, high hardness, transparent to infrared, stable chemically character. It is widely used in industry, defense, and scientific research (such as a high-temperature infrared window). It is also a widely used single-crystal substrate material, which is the preferred substrate for the current blue, violet, white light-emitting diode (LED) and blue laser (LD) industries (first need to extend the gallium nitride film on the sapphire substrate). It is also an essential superconducting thin film substrate. In addition to making high-temperature superconducting films such as Y-series and La-series, it can also be used to produce new practical MgB2 (magnesium diboride) superconducting films.
Sapphire Crystal Physical Properties
| Material | Al2O3 |
|---|---|
| Crystal Structure | Hexagonal |
| Lattice (A) | a=4.758, c=12.992 |
| Density(g/cm3) | 3.98 g/cm3 |
| Melting Point | 2040℃ |
| Hardness | 9.0 (Mohns) |
| Thermal Expansion | 7.5 (x 10-6/℃) |
| Dielectric Constants | 9.4 @300K at A axis ~ 11.58@ 300K at C axis |
Sapphire Crystal Specifications
| Size | 10x3, 10x5, 10x10, 15x15, 20x15, 20x20 |
|---|---|
| Dia15, Dia 20, Dia 1'' | |
| Thickness | 0.5 mm, 1.0 mm |
| Polished | SSP or DSP |
| Crystallographic D spacing | (1120 ) - a plane: 2.379 Å (1102) - r plane: 1.740 Å |
| (1010) - m plane: 1.375 Š(1123) - n plane: 1.147 ů | |
| (0001) - c plane: 2.165 Å (1011) - s plane: 1.961 Å | |
| Redirection Precision | ±0.5° |
| Redirection the Edge | 2°（special in 1°） |
| Angle of Crystalline | Special size and orientation are available on demand. |
| Ra: | ≤5Å（5µm×5µm） |
Sapphire Crystal Package
Packaged with class 100 clean bag in a class 1000 clean room.
Related Products of Sapphire Crystal
|
Semiconductor Crystals |
Scintillation Crystals |
Photoelectric Crystals |
|
Infrared Crystals |
Laser Crystals |
Nonlinear Optical Crystals |
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