Gd3Ga5O12 Gallium Gadolinium Garnet Optical Substrate GGG Crystal
Gallium Gadolinium Garnet (Gd3Ga5O12) Single Crystal For Magnetic Refrigeration Industry
Introduction:
Gallium Gadolinium Garnet (Gd3Ga5O12 or GGG) has been successfully applied in the magnetic refrigeration industry in the temperature zone below 20k for Helium-nitrogen liquefaction pre-stage refrigeration.
GGG single crystal is a material with good physical and mechanical properties and chemical stability. which make it promising for use in the fabrication of various optical components as well as a substrate material for magneto-optical films and high – temperature superconductors. GGG is also the best substrate material for making microwave isolators.
Main Advantages :
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Low optical losses (<0.1%/cm)
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High thermal conductivity (7.4W m-1K-1).
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High laser damage threshold (>1GW/cm2)
Material Properties :
| Name | GGG Crystal |
|
Chemical Formula |
Gd3Ga5O12 |
|
Lattic 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
|
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