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Garnets
Garnet Crystals and Substrates for Epitaxy
GGG, SGGG and NGG Garnets are used as substrates for liquid epitaxy. The lattice parameter of our crystals is well controlled and the surface polish finishing is of the highest quality, allowing a perfect epitaxy.
We can offer crystals with a large variety of compositions with a very homogeneous and well-controlled lattice parameter in large diameters up to 4’’. Crystals of larger dimensions are also available for specific applications like cryogenic ones.
We have a large industrial capacity available and we can provide unique pieces as well as thousands of wafers.
- Gadolinium Gallium Garnet (GGG)
- Substituted Gadolinium Gallium Garnet (SGGG)
-
Neodymium Gallium Garnet (NGG)
Uses/Applications
- GGG, SGGG and NGG are used to grow semiconductor crystal layers. This process is called epitaxy and is used in nanotechnology and in semiconductor fabrication.
Features/Benefits
- Diameters up to 4" (100mm).
- Special configurations and shapes (squares, rectangles, etc..) available on request.
- The polished surface of our substrates is of high quality and ready for epitaxy (“epi-ready”).
Standard diameters
- GGG (Gd3Ga5O12) 1”, 2”, 3” or 4”
- SGGG (Substituted GGG) 1”, 2”, 3” or 4”
- NGG (Nd3Ga5O12) 1" or 2"
Standard thicknesses
- Any thickness > 450 microns
Wafers with standard dimensions and thicknesses are in stock and immediately available.
Alternate shapes and sizes are available upon request.
| Properties | Value |
|---|---|
| GGG compostion Gd3Ga5O12 | Lattice parameter 12.383 A +/- 0.001 |
| SGGG composition Substituted GGG | Lattice parameter 12.497 A +/- 0.001 |
| NGG composition Nd3Ga5O12 | Lattice parameter 12.509 A +/- 0.001 |
Other specific compositions could be also manufactured on demand.