Gallium Gadolinium Garnet (GGG)
| 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 |
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| Optical properties |
|
|
| Transmission range |
0.3 to 7.0 mm |
|
| Refraction index: |
nd = 1.9708 at 577 nm |
|
| ne 1.9567 |
|
|
| nc 1.9577 at 625nm |
|
|
| ne 1.9567 |
|
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| nc 1.9500 at 2000nm |
|
|
| ne 1.9567 |
|
|
| nc 1.9454 at 5000nm |
|
|
| X-ray properties |
|
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| Orientation: (100), (111) |
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|
 |
| Doped: |
 |