GGG Substrates and Wafers

Fine mechanical, optical and chemical properties
Maximum diameter: 4 inches ; typical thickness 0.5/1.0mm
Clean package: 1000 grade clean room and 100 grade bags
Typical Orientation of GGG substrates: ＜100＞, ＜110＞ and ＜111＞
Applications: magneto-optical films (such as YIG or BIG thin film) growth, excellent as optical, microwave isolator and High Temperature Supperconductor (HTS) substrates

Code	Size	Thickness	Orientation	Surface Finish	Unit Price	Delivery
6506-001	5x5mm	0.5mm	<100>	SSP	Inquire	2 weeks
6506-002	5x5mm	0.5mm	<110>	SSP	Inquire	2 weeks
6506-003	5x5mm	0.5mm	<111>	SSP	Inquire	2 weeks
6506-004	10x10mm	0.5mm	<100>	SSP	Inquire	2 weeks
6506-005	10x10mm	0.5mm	<110>	SSP	Inquire	2 weeks
6506-006	10x10mm	0.5mm	<111>	SSP	Inquire	2 weeks
6506-007	Φ12.7mm	0.5mm	<111>	SSP	Inquire	2 weeks
6506-008	Φ12.7mm	0.5mm	<111>	DSP	Inquire	2 weeks
6506-009	Φ25.4mm	0.5mm	<111>	SSP	Inquire	2 weeks
6506-010	φ25.4mm	0.5mm	<111>	DSP	Inquire	2 weeks
6506-011	φ50.8mm	0.5mm	<111>	SSP	Inquire	2 weeks
6506-012	φ50.8mm	0.5mm	<111>	DSP	Inquire	2 weeks
6506-013	φ76.2mm	0.5mm	<111>	SSP	Inquire	Inquire
6506-014	φ76.2mm	0.5mm	<111>	DSP	Inquire	Inquire

Fine mechanical, optical and chemical properties
Excellent as optical, microwave isolator and HTS substrates

Gadolinium Gallium Garnet (GGG) single crystal is material with good optical, mechanical and thermal properties which make it promising for use in fabrication of various optical components as well as substrate material for magneto - optical films and high - temperature superconductors. It can be used for infrared optical isolator (1.3 and 1.5 um), which is made of YIG or BIG film on the Gadolinium Gallium Garnet (GGG) substrate plus birefringence parts. GGG crystal is an important substrate for microwave isolators and can be used as a HTS material, for laser technology, telecommunications, electronic.

Hangzhou Shalom EO provides not only the stocked standard epi-ready GGG wafers, but also the custom type wafers upon request.

Common Specifications:

Material	GGG single crystals	Orientation	＜100＞,<110>,<111>
Orientation Error	±0.5°	Maximum Diameters	4 inches
Typical Thickness	0.5mm,1.0mm	Size Tolerance	±0.05mm
Size Tolerance	±0.1mm	Surface Finish	SSP or DSP
Roughness	Ra<0.5nm	Cleaness and Package	1000 grade clean room, 100 grade bags

Physical Properties:

Density, g/cm³ (20°C)	7.08	Type of Materials	Single crystal
Crystal Structure	cubic	Lattice Parameter, A	12.383
Melting Point (°C)	1750	Thermal Conductivity, W x cm^-1 x °K^-1	7.05
Thermal Expansion, 1/°C	8.2x10^-6	Dielectric Constant	30
Dielectric Loss Tangent, at 10GHz	0.15	Mohs Hardness	7.5

Curves:

1）Typical X-Ray Diffraction (XRD) Curve of GGG Crystals Substrates and Wafers

2) Typical Surface Roughness of GGG substrate <111> measured by Atomic Force Microscope (AFM) in 5μm x 5μm Scale

GGG Substrates and Wafers

GGG Wafers φ50.8x0.5mm <111> SSP

GGG Wafers φ12.7x0.5mm <111> SSP

GGG Wafers φ76.2x0.5mm <111> SSP