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Gadolinium Gallium Garnet (Gd3Ga5O12) (GGG) Crystals and Substrates
SKU: SU3401
GGG (Gadolinium Gallium Garnet) crystals and substrates
Chemical formula: Gd3Ga5O12
GGG single crystals has excellent properties, such as high mechanical strength, chemical stability, thermal conductivity and thermal capacity. Because of these unique properties, GGG crystals are considered as one of the best materials used for a magneto-optical films (such as YIG or BIG thin film).
Both standard and custom made GGG crystals and substrates are available at MSE Supplies. Nd:GGG (Neodymium doped Gadolinium Gallium Garnet) crystals are also available.
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Main Parameters
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Crystal structure
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Cubic Garnet
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Growth method
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Czochralski
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Unit cell constant
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a=12.37 Å, (Z=8)
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Melt point (°C)
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1730
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Purity
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99.99%
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Density
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7.08 g/cm3
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| Thermal Expansion |
8 x 10-6/K |
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Hardness
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6.5-7.5 Mohs
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Index of refraction
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1.95 @1064nm
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| Transparency wavelength range | 400 - 7000 nm |
| Color | Colorless |
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Sizes
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5x5 mm, 10x10 mm, 20x20 mm, dia 2", other sizes are available upon request
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Thickness
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0.5mm, 1.0mm
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Surface Polishing
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Single or double side polished (epi-ready)
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Crystal Orientations
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(100), (110), (111)
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Surface Roughness Ra:
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~ 0.5nm
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Package
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Packed in a class 100 clean bag.
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Reference:
O.A. Petrenko, C. Ritter, M. Yethiraj, and D. McK Paul. Investigation of the Low-Temperature Spin-Liquid Behavior of the Frustrated Magnet Gadolinium Gallium Garnet. Phys. Rev. Letters, Vol (80(20), pp 4570-4573, 1998.
M. Sabbaghi, G.W. Hanson, M. Weinert, F. Shi, and C. Cen. Terahertz response of gadolinium gallium garnet (GGG) and gadolinium scandium gallium garnet (SGGG). J. App. Phys. Vol. (127, Article#025104, 2020.