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GGG substrate

GGG substrate

 

Major capability parameter
Crystal structure
Cubic
Growth method
Czochralski method
Lattice constant
a=12.376Å,(Z=8) 
Melt point(℃)
1800
Purity
99.99%
Density
7.09
Hardness
6-7(mohs)
Refractive index
1.95
Standard Size (mm)
10x5,10x10,15x15,20x15,20x20,
dia2” x 0.33mm, dia2” x 0.43mm, dia 3" x 0.5mm
Standard Thickness
0.5mm,1.0mm
Polishing
Single or double side polished
Crystal Orientation
<111>, <100>, <110>
Orientation accuracy
±0.5°
Edge Orientation accuracy:
2°(special in 1°)
Other angle of substrate
Special size and orientation are available upon request
Surface roughness(Ra):
≤5Å(5µm×5µm)
Packing
100 clean bag,1000 exactly clean bag

 

GGG substrate, Gadolinium gallium garnet (GGG) is dedicated substrates for magneto-optical film. In the optical communication devices, require a lot of using 1.3μ and 1.5μ optical isolator, Its core component is the YIG or BIG film been placed in a magnetic field. GGG single crystal substrates of different tangential, which can achieve the best lattice match with these magneto-optical material, Thus ensuring the YIG, BIG film epitaxial growth be successful.
GGG have good physical and mechanical properties and chemical stability. GGG is the best substrate material for made the microwave isolators .

 
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