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GGG crystals are synthetic crystals that belong to the garnet family and have excellent physical, chemical and optical properties. Because of its high melting point, good thermal stability and optical transparency, GGG crystals are widely used in laser technology, magneto-optical devices and substrate materials. Its unique lattice structure makes it an ideal substrate for a variety of functional materials.
1. High melting point and thermal stability: The melting point of GGG crystal is about 1750°C, which has excellent thermal stability and is suitable for application in high temperature environment.
2. Excellent mechanical properties: high hardness (Mohs hardness about 7.5) and good mechanical strength, can withstand the mechanical stress in processing and use.
3. Optical transparency: High light transmission in visible and near-infrared bands (400 nm-6 µm), suitable for optical and laser applications.
4. Chemical inertness: Good chemical stability for most acids, bases and solvents, suitable for corrosive environments.
5. Magneto-optical characteristics: GGG crystal has excellent magneto-optical effect (such as Faraday effect), suitable for the manufacture of magneto-optical devices.
6. Lattice matching: Its lattice constant is highly matched with a variety of functional materials (such as yttrium iron garnet YIG), which is an ideal substrate for high-quality epitaxial growth.
GGG crystals (gadolinium gallium garnet) have unique advantages in the field of gemstone materials, because of their high refractive index (about 1.97), excellent optical transparency and rich color expression, and are often used as high-end imitation stones. The following are the main applications of GGG crystals in gemstone materials:
1. Imitation of natural gems: GGG crystals can perfectly simulate the gloss and fire color of natural gems such as diamonds and sapphires, and the cost is lower, suitable for making high-end fashion jewelry. Its high refractive index and dispersion properties give the gemstone a brilliant visual effect in light.
2. Colored gems: By doping different elements, GGG crystals can show a variety of colors (such as green, pink, blue, etc.) to meet the diverse needs of jewelry design. Its high color saturation is suitable for making personalized jewelry.
3. High durability jewelry: The hardness of GGG crystal (Mohs hardness of about 7.5) is close to natural garnet, strong wear resistance, suitable for making daily wear rings, earrings and pendants and other jewelry.
4. Customized design: GGG crystals are easy to cut and polish, enabling complex design requirements and providing unique customization options for high-end jewelry brands.
ZMSH focuses on the development and production of GGG crystals, providing one-stop services from raw materials to finished product processing. With advanced production processes and strict quality control, we ensure that every GGG gem has excellent optical properties and perfect cutting process. Whether custom-designed or mass-produced, we can meet our customers' needs for high-quality gems and help jewelry brands create unique charm.
1. Q: What is GGG crystal gemstones used for?
A: GGG crystal substrates are primarily used for epitaxial growth of magnetic films (e.g., YIG) in applications like microwave devices, magneto-optical systems, and spintronics.
2. Q: Why is GGG a good gemstones material?
A: GGG is an excellent substrate material due to its lattice matching with functional materials, high thermal stability, and excellent optical properties, making it ideal for high-quality film growth.
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