SGGG (Substituted GGG) Single Crystals and Wafers

Low optical losses(<0.1%/cm) and fine chemial and mechanical properties
High the rmal conductivity (7.4W m-1 K-1) and High laser damage threshold (>1GW/cm2)
Maximum diameter: 4 inches ; typical thickness 0.5/1.0mm
Clean package: 1000 grade clean room and 100 grade bags
Typical orientation of SGGG substraest: ＜111＞
Applications: liquid expitaxy, magneto-optical film, YIG and BIG film epitaxial growth

Inquire Us

Specifications:

Material	SGGG single crystals	Orientation	＜111＞
Orientation Error	±0.2°	Maximum Diameter	4 inches
Typical Thickness	0.5mm, 1.0mm	Thickness Tolerance	±0.05mm
Size Tolerance	±0.1mm	Surface Finish	SSP or DSP
Roughness	≤1nm	Cleaness and Package	1000 grade clean room, 100 grade bags

Material Properties:

Material	SGGG	Chemical Formular	Substituted GGG
Lattice Constant	12.497Å	Growth Method	Czochralski
Density	7.09g/cm³	Mohs Hardness	7.5
Melting Point	1730℃	Refractive Index	1.954@1064nm

GGG, SGGG and NGG Garnets are used as substrates for liquid expitaxy. GGG substrates 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 this magneto-optical material, thus ensuring the YIG and BIG film epitaxial growth be successful. It has good physical and mechanical properties and chemical stability. GGG is also substrate material for microwave devices.