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      4. Garnets

      Garnets

      Garnet Crystals and Substrates for Epitaxy
       

      Garnet Ingots
      garnets wafers in shipping boxes (SGGG, GGG, NGG)
      garnets wafers of different compositions (SGGG, GGG, NGG) and different diameters (from 1” to 4”)

      Gadolinium Gallium Garnet (GGG), Substituted Gadolinium Gallium Garnet (SGGG) and Neodymium Gallium Garnet (NGG) 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.

       

       

      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”).

       

      Properties

      Properties Composition Lattice parameter (at 20ºC) Orientation
      GGG Gd3Ga5O12 12.383 A +/- 0.001 (111)
      (110)
      (100)
      SGGG Substituted GGG 12.497 A +/- 0.003 (111)
      (110)
      (100)
      NGG Nd3Ga5O12 12.509 A +/- 0.001 (111)

      Other specific compositions could be also manufactured on demand.

       

      Size Range

      Standard diameters

      • GGG (Gd3Ga5O12)  1”, 2”, 3” or 4”
      • SGGG (Substituted GGG)   1”, 2”, 3” or 4”
      • NGG (Nd3Ga5O12)  1" or 2"

      Available 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.

      GGG Standard Size & Orientation 

      Model Dimensions

      Tolerance

      Orientation Request Quote
      GGG(001) 1"x0.5

      1" diameter x 500 µm thick

      Diameter: +/- 0.005”
      Thickness: +/- 50 µm

      Orientation: (001) +/- 0.1°

      Click here

      GGG(110) 1"x0.5 1" diameter x  500 µm thick

      Diameter: +/- 0.005”
      Thickness: +/- 50 µm

      Orientation: (110) +/- 0.1°

      Click here

      GGG(111) 1"x0.5 1" diameter x  500 µm thick

      Diameter: +/- 0.005”
      Thickness: +/- 50 µm

      Orientation: (111) +/- 0.1°

      Click here

      GGG(001) 2"x0.5 2" diameter x  500 µm thick

      Diameter: +/- 0.005”
      Thickness: +/- 50 µm

      Orientation: (001) +/- 0.1°

      Click here

      GGG(110) 2"x0.5 2" diameter x  500 µm thick Diameter: +/- 0.005”
      Thickness: +/- 50 µm
      Orientation: (110) +/- 0.1°

      Click here

      GGG(111) 2"x0.5 2" diameter x  500 µm thick

      Diameter: +/- 0.005”
      Thickness: +/- 50 µm

      Orientation: (111) +/- 0.1°

      Click here

      GGG(001) 3"x0.5 3" diameter x  500 µm thick Diameter: +/- 0.005”
      Thickness: +/- 50 µm
      Orientation: (001) +/- 0.1°

      Click here

      GGG(111) 3"x0.5 3" diameter x  500 µm thick Diameter: +/- 0.005”
      Thickness: +/- 50 µm
      Orientation: (111) +/- 0.1°

      Click here

       

      Related Documents

       Garnet Product Data Sheet
       Photonics Products Warranty

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