Garnet Crystals and Substrates

Ready for Epitaxy

Gadolinium Gallium Garnet (GGG)
Substituted Gadolinium Gallium Garnet (SGGG)
Neodymium Gallium Garnet (NGG)

GGG, SGGG, NGG gallium crystals are all used as substrates to grow semiconductor crystal layers. This process is called epitaxy and is used in nanotechnology and in semiconductor fabrication. 

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.

  • Diameters up to 4" (100mm).
  • Special configurations and shapes (squares, rectangles, etc..) are available on request.
  • The polished surface of our substrates is of high quality and ready for epitaxy (“epi-ready”).
Specifications
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.

Model Dimensions

Tolerance

Orientation
GGG(001) 1"x0.5

1" diameter x 500 µm thick

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

Orientation: (001) +/- 0.1°

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

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

Orientation: (110) +/- 0.1°

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

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

Orientation: (111) +/- 0.1°
GGG(001) 2"x0.5 2" diameter x 500 µm thick

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

Orientation: (001) +/- 0.1°
GGG(110) 2"x0.5 2" diameter x 500 µm thick

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

Orientation: (110) +/- 0.1°
GGG(111) 2"x0.5 2" diameter x 500 µm thick

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

Orientation: (111) +/- 0.1°
GGG(001) 3"x0.5 3" diameter x 500 µm thick

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

Orientation: (001) +/- 0.1°
GGG(111) 3"x0.5 3" diameter x 500 µm thick

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

Orientation: (111) +/- 0.1°

 

Data Sheets
Garnet-Wafers.pdf

Garnet Crystals and Substrates for Epitaxy

PDF | 290 KB
Garnet-Wafers