GGG Substrate | Gadolinium Gallium Garnet Crystal Substrate

Gadolinium Gallium Garnet (GGG) Substrate is widely used in magneto-optical applications, providing an optimal lattice match for yttrium iron garnet (YIG) and bismuth iron garnet (BIG) thin films. These films are crucial in 1.3 µm and 1.5 µm optical isolators for fiber optic communication. GGG’s excellent physical, mechanical, and chemical stability ensures the successful growth of epitaxial films and reliable performance in thin-film fabrication. Additionally, GGG is utilized in cryogenic applications below 20K, such as helium liquefaction and low-temperature refrigeration. Heeger Materials provides high-quality GGG Substrate to meet diverse application needs.

GGG Substrate Properties

Crystal Structure	Cubic
Growth Method	Czochralski Method
Lattice Constant	a = 12.376Å, (Z = 8)
Melting Point (℃)	1800
Purity (%)	99.95
Density (g/cm³)	7.09
Hardness (Mohs)	6-7
Refractive Index	1.95

GGG Substrate Specifications

Dimensions	10×3mm, 10×5mm, 10×10mm, 15×15mm, 20×15mm, 20×20mm
	Ø50.8, Ø30, Ø101.6mm; substrate sizes and orientations can be customized
Polishing	Single side or double side
Crystal Orientation	<111> ±0.5°
Crystal Plane Orientation Accuracy	±0.5°
Edge Orientation Accuracy	2° (special requirements can be achieved within 1°)
Cut-Angle Wafers	Customizable wafers with edges oriented at specific tilt angles (1°-45°).
Ra (Roughness)	≤5Å (5μm×5μm)

GGG Substrate Key Features

• Low Optical Loss: <0.1%/cm
• High Thermal Conductivity: 7.4 W·m⁻¹·K⁻¹
• High Laser Damage Threshold: >1 GW/cm²

GGG Substrate Applications

• Substrate for YIG and BIG Magneto-Optical Films: GGG substrates provide excellent lattice matching for YIG and BIG thin films, essential for optical isolators in fiber communication systems.
• Magnetic Bubble Memory: Used as a substrate material in magnetic bubble memory devices, enabling stable and efficient data storage.
• Magneto-Optical Devices: Supports the development of advanced magneto-optical components, including modulators and sensors.
• Cryogenic Magnetic Refrigeration: Applied in magnetic refrigeration systems operating below 20K, aiding in helium liquefaction and low-temperature cooling.
• Microwave and Optical Applications: Utilized in microwave devices, filters, and optical components due to their stable physical and chemical properties.

GGG Substrate Packing And Shipping

Gadolinium Gallium Garnet (GGG) Substrate will be securely packaged in sturdy containers with cushioning materials to prevent movement or damage during shipping. This careful packaging ensures that the product arrives in perfect condition, maintaining its high-quality standards throughout delivery.

Where to Buy Gadolinium Gallium Garnet (GGG) Substrate in Bulk?

Heeger Materials Inc., a professional supplier and manufacturer of high-quality Magnetic and Ferroelectricity Thin Film Substrate products, including Gadolinium Gallium Garnet (GGG) Substrate, leverages extensive expertise in supply and export to offer competitive prices. We provide customized solutions to meet specific requirements, ensuring exceptional quality and customer satisfaction.

Heeger Materials Inc. was established in 2016 in Colorado, USA. We specialize in premium-grade metals, alloys, ceramics, powders, and other materials catering to research, development, and large-scale industrial production in scientific and industrial sectors.