GSGG Substrate
GGG (12.373Å) has a similar lattice constant of YIG (12.376Å), it is widely used as the substrate material of YIG magneto-optical thin film. However, in...
GSGG Substrate
GGG (12.373Å) has a similar lattice constant of YIG (12.376Å), it is widely used as the substrate material of YIG magneto-optical thin film. However, in order to improve the magneto-optical optimum value of magneto-optical thin film, sometimes it is necessary to select a single crystal substrate with a larger lattice constant. GSGG (12.554Å) is that the 2 Ga of the octahedron in the GGG crystal are replaced by Sc wit...
- ManufacturerOST Photonics
- CategoryCrystal Wafer and Substrate
- Lead TimeQuoted per order
- CustomizationSize, orientation and surface finish to drawing
GGG (12.373Å) has a similar lattice constant of YIG (12.376Å), it is widely used as the substrate material of YIG magneto-optical thin film. However, in order to improve the magneto-optical optimum value of magneto-optical thin film, sometimes it is necessary to select a single crystal substrate with a larger lattice constant. GSGG (12.554Å) is that the 2 Ga of the octahedron in the GGG crystal are replaced by Sc with a larger ionic radius, thus having a larger lattice constant.
OST Photonics offers high quality GSGG substrates for researchers and industries. Crystal size and thickness can be customized according to your requirements.
Features
- Low optical loss
- High thermal conductivity
- High laser damage threshold
- Good mechanical properties and chemical stability
Applications
- Microwave isolators
- Optical communication
- Magnetic refrigeration
Processing Capability
- Orientation:<111>, etc.
- Dimension: 10x10mm, 10x5mm, 5x5mm, etc.
- Thickness: 0.5mm, 1.0mm, etc.
- Available items: substrate, blanks and customized optics
Specification and properties of GSGG Substrates
| Crystal Structure | Cubic |
| Growth Method | Czochralski |
| Lattice Constant | a=12.554 Å |
| Melt Point | 1750 ℃ |
| Purity | 99.99% |
| Density | 7.09 g/cm3 |
| Hardness | 7.5 Mohs |
| Refractive Index | 1.95 |
| Orientation | <111>, etc. |
| Orientation Tolerance | ±0.5° or better |
| Dimension | 10x10mm, 10x5mm, 5x5mm, etc. |
| Dimension Tolerance | ±0.1 mm or better |
| Thickness | 0.5mm, 1.0mm, etc. |
| Thickness Tolerance | ±0.05 mm or better |
| Surface Finish | Single side polished (SSP)/Double sides polished (DSP) |
| Surface Roughness | Ra≤5Å (5×5µm) |
| Package | Class 100 clean bag, Class 1000 super clean room |
Lattice Constants of Several Garnet Crystals
| Crystallochemical Formula | GGG (Gd3Ga5O12) | YSGG (Y3Sc2Ga3O5) | CaMgZr:GGG (Gd2.6Ca0.4)(Ga4.1Mg0.25Zr0.65)O12 | GYSGG (Gd0.63Y2.37Sc2Ga3O12) | GSGG (Gd3Sc2Ga3O12) |
| Lattice Constant | 12.373 Å | 12.426 Å | 12.480 Å | 12.507 Å | 12.554 Å |
| Diffraction (2θ) | 51°7′ | 50°44′ | 50°43′ | 50°40′ | 50°22′ |
Other Crystal Wafer and Substrate Materials
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