GGG
Keywords:
GGG
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- Commodity name: GGG
Gadolinium gallium garnet (GGG) is a special substrate for magneto-optical thin films because of its excellent physical, mechanical and chemical stability.
In optical communication equipment, 1.3 μ And 1.5 μ The core part of the optical isolator is YIG or big film placed in magnetic field. The GGG single crystal substrates with different tangential directions can match the crystal lattice of this kind of magneto-optical materials, so as to ensure the successful epitaxial growth of YIG and big films.
In the field of magnetic refrigeration, GGG Crystal has been successfully used in the temperature range below 20K for market he Ⅱ flow and pre stage refrigeration of helium nitrogen liquefaction.
Main Advantages:
Low optical losses (<0.1%/cm)
High thermal conductivity (7.4W m-1K-1)
High laser damage threshold (>1GW/cm2)
Typical applications:Substrate materials for YIG and BIG magneto-optical epitaxial membranes
Magnetic bubble memory storage
Magnetic refrigeration
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Material GGG Chemical Formula Gd3Ga5O12 Crystal Structure Cubic Lattice Constant a=12.383 Å Growth Method Czochralski Hardness 8.0 Density 7.13g/cm³ Melting Point 1725℃ Refractive Index 1.954 @ 1064nm -
Crystro offers
Dimensions Max Diameter 101.6mm (4 inch) Thickness 0.5mm Other thickness upon request Polishing Single or double sides polishing Orientation <111>±0.2° Orientation Flat 2°（within 1° for special requirement） Ra Ra≤1nm, EPI ready Angle of Crystalline Special size and orientation are available upon request Note: Above parameters for reference only, please contact our sales Rep. for your specific requirement.
Professional R&D, design, production and sales of crystal materials and their application devices
Anhui Crystro Crystal Materials Co., Ltd.
Address: No. 176, Yunhai Road, Hefei Economic and Technological Development Zone, China