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SGGG crystal, namely Ca Mg Zr doped gadolinium gallium garnet, is an excellent substrate material for Bi Fe garnet epitaxial films.Gadolinium gallium garnet (GGG) substrate, one of the earlier developed garnet materials, can not be used as the substrate of high bismuth substituted iron garnet epitaxial layer because of its small lattice constant. Therefore, the SGGG crystals with Ca, Mg and Zr as substitution ions are more suitable for the epitaxial films.
Chemical formula | Substituted GdaGa5O12 |
Crystal structure | Cubic system |
Lattice constant | a=12.497Å |
Growth method | Czochralski |
Hardness | 7.5 Mohs |
Density | 7.09g/cm³ |
Melting point | 1730℃ |
Reflection coefficient | 1.954 at 1064nm |
Size | MaxФ76.2mm(3inch） |
Thickness | 0.5mm/1mm |
Polishing | Single or double sided |
Crystal orientation | ±0.2° |
Edge orientation accuracy | 2°（The characteristic requirements can reach 1 ° within） |
Oblique chip | 2°（According to specific requirements, the crystal with edge orientation can be tilted at a specific angle (tilt angle 1 °- forty-five °）） |
Surface roughness | Ra≤1nm |
Packing | Class 100 clean bag, class 1000 ultra static room |
Note: Parameters above can be customized as required. | |
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