Gadolinium Gallium Garnet GGG Single Crystal Substrate For Epitaxial Growth
Gadolinium Gallium Garnet GGG Single Crystal Substrate For Epitaxial Growth
Introduction:
Gadolinium Gallium Garnet (GGG, Gd3Ga5O12) is a synthetic crystalline material of the garnet group, with good mechanical, thermal, and optical properties. It is typically colorless. It has a cubic lattice, a density of 7.08 g/cm3 and its Mohs hardness is variously noted as 6.5 and 7.5. Its crystals are produced with the Czochralski method. During production, various dopants can be added for colour modification. The material is also used in fabrication of various optical components and as a substrate material for magneto–optical films (magnetic bubble memory.). GGG can also be used as a seed substrate for the growth of other garnets such as yttrium iron garnet.
Main Advantages:
- Low optical losses (<0.1%/cm)
- High thermal conductivity (7.4W m-1K-1).
- High laser damage threshold (>1GW/cm2)
Material Properties:
| Name | GGG Crystal |
|
Chemical Formula |
Gd3Ga5O12 |
|
Lattice Parameter |
a=12.376Å |
|
Growth Method |
Czochralski |
|
Density |
7.13g/cm3 |
| Hardness | 8.0 Mohs |
| Melting Point | 1725℃ |
| Refractive Index |
1.954 at 1064nm |
Crystro offers:
| Size | MAX Dia 4 inches |
| Thickness | 0.5mm/ 1mm |
| Polishing | Single or Double side |
|
Orientation |
<111>±0.2° |
| Edge Orientation accuracy | 2°(special in 1°) |
| Cutting | Special size and orientation are available upon request |
| Ra | ≤1nm |
| Package |
100 clean bag,1000 exactly clean bag
|
Picture:
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