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Substituted GGG (SGGG) EPI 1sp Single Crystal Substrates
SGGG is used as substrates for liquid epitaxy.It's dedicated substrates for magneto-optical film.
| Crystal properties | ||
| Crystal growth method | Czochralski | |
| Crystal growth orientation | (100), (111) | |
| Maximum size | 3 inch diameter | |
| Variations | Dopands on request | |
| Crystallographic properties | ||
| Crystallographic structure | Cubic | |
| a = 12.383 Å | ||
| a = 12.505 Å SGGG | ||
| Mineralogical | Garnet | |
| Twinning structure | Perfect | |
| Colour | Colourless / Brownish SGGG | |
| Physical properties | ||
| Density | 7.09 g/cm3 | |
| Melting point | 1730 °C | |
| Hardness | 7.5 (Mohs) | |
| Dielectric constant | 30 | |
| Dielectric loss tangent (10 GHz) | ca. 3.0 * 10_4 | |
| Optical properties | ||
| Transmission range | 0.3 to 7.0 mm | |
| Refraction index: | nd = 1.9708 at 577 nm | |
Compare GGG with SGGG:
| Material | GGG | SGGG |
| Chemical Formular | Gd3Ga5O12 | Substituted GGG |
| Lattice Constant | 12.383A | 12.497A |
| Growth Method | Czochralski | Czochralski |
| Density | 7.13g/cm3 | 7.09g/cm3 |
| Mohs Hardness | 8 | 7.5 |
| Melting Point | 1725℃ | 1730℃ |
| Refractive Index | 1.954 at 1064nm | 1.954 at 1064nm |
