GGG
Gadolinium Gallium Garnet (GGG) is a special substrate for magneto-optical thin films. GGG single crystal substrates with different tangential directions can be optimally matched with the crystal lattice of YIG and BIG thin film magneto-optical materials, so as to ensure the successful epitaxial growth of YIG and BIG thin films. GGG crystal is also the best substrate material for making microwave isolators.
CasCrysTech (CCT) provides high quality Gadolinium Gallium Garnet (GGG) crystals upon request from customers.
Uses/Applications
Gadolinium Gallium Garnet (GGG) is a special substrate for magneto-optical thin films.
Used for epitaxial growth of YIG and BIG thin films.
The best substrate material for making microwave isolators.
Features/Benefits
GGG single crystal substrates with different tangential directions can be optimally matched with the crystal lattice of YIG and BIG thin film magneto-optical materials.
-
Crystal Structure
Cubic
Growth Method
Czochralski
Lattice Constant
a=12.376Å,(Z=8)
Melt Point
1800℃
Purity
99.95%
Density
7.09（g/cm3）
Mohs Hardness
6-7（mohs）
Refractive Index
1.95
Dimension
5x5mm，10x5mm，10x10mm，15x15mm，20x15mm，20x20mm，Dia50.8mm
Thickness
0.5mm，1.0mm
Polishing
One side or two sides
Orientation
<111>/<100>/<110>±0.5º
Crystal Plane Orientation Accuracy
±0.5°
Edge Orientation Accuracy
2°（Special requirements can reach within 1°）
Bevel Wafer
According to specific requirements, wafers with edge-oriented crystal planes inclined at a specific angle (inclination angle 1°-45°) can be processed.
Surface Roughness
Ra≤5Å（5×5µm）
Package
Class 100 clean bag, Class 1000 super clean room
-
Dimension
5x5mm，10x5mm，10x10mm，15x15mm，20x15mm，20x20mm
∅50.8mm
Thickness
0.5mm，1.0mm