GGG Substrates and Wafers

Exceptional magneto-optical properties, low dielectric loss and high thermal conduction
Maximum diameter: 4 inches; typical thickness 0.5/1.0mm
Clean package: class 1000 clean room and class 100 bags
Typical Orientation of GGG substrates: ＜100＞, ＜110＞ and ＜111＞
Excellent as magneto-optical isolator, microwave epitaxial substrates, and HTS substrates
Applications: magneto-optical films (such as YIG or BIG thin film) growth, excellent as optical, microwave isolator and High-Temperature Superconductor (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

Gadolinium Gallium Garnet (GGG) single crystal is a material with exceptional magneto-optical properties, low dielectric loss, and high thermal conduction which make it promising for use in the fabrication of various optical magneto-optical components as well as for epitaxial growth of microwave elements and high-temperature superconductors. GGG substrates can be incorporated into infrared optical isolator (operating from 1.3μm to 1.5μm), which comprises YIG or BIG film deposited on the Gadolinium Gallium Garnet (GGG) substrate combined with birefringence parts. GGG substrates enable the fabrication of high-performance optoelectronic devices such as lasers, light-emitting diodes (LEDs), and photodetectors.

Hangzhou Shalom EO provides standard epi-ready GGG substrates and wafers, custom GGG wafers are also available upon request.

Common Specifications:

Material	GGG single crystals	Orientation	＜100＞,<110>,<111>
Orientation Error	±0.5°	Maximum Diameter	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	Cleanness and Package	class1000 clean room, class 100 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 10x10x0.5mm <111> SSP

GGG Wafers 5x5x0.5mm <111> SSP

GGG Wafers φ76.2x0.5mm <111> DSP