GGG

Gadolinium Gallium Garnet (GGG) is a special substrate for magneto-optical thin films. GGG single crystal substrates with different tangential directions can be optimally matched with the crystal lattice of YIG and BIG thin film magneto-optical materials, so as to ensure the successful epitaxial growth of YIG and BIG thin films. GGG crystal is also the best substrate material for making microwave isolators.

CasCrysTech (CCT) provides high quality Gadolinium Gallium Garnet (GGG) crystals upon request from customers.

Uses/Applications

Gadolinium Gallium Garnet (GGG) is a special substrate for magneto-optical thin films.
Used for epitaxial growth of YIG and BIG thin films.
The best substrate material for making microwave isolators.

Features/Benefits

GGG single crystal substrates with different tangential directions can be optimally matched with the crystal lattice of YIG and BIG thin film magneto-optical materials.

  • Crystal Structure

    Cubic

    Growth Method

    Czochralski

    Lattice Constant

    a=12.376Å,(Z=8)  

    Melt Point

    1800℃

    Purity

    99.95%

    Density

    7.09(g/cm3

    Mohs Hardness

    6-7mohs

    Refractive Index

    1.95

    Dimension

    5x5mm10x5mm10x10mm15x15mm20x15mm20x20mmDia50.8mm

    Thickness

    0.5mm1.0mm

    Polishing

    One side or two sides

    Orientation

    <111>/<100>/<110>±0.5º

    Crystal Plane Orientation Accuracy

    ±0.5°

    Edge Orientation Accuracy

    Special requirements can reach within 1°

    Bevel Wafer

    According to specific requirements, wafers with edge-oriented crystal planes inclined at a specific angle (inclination angle 1°-45°) can be processed.

    Surface Roughness

    Ra≤5Å5×5µm

    Package

    Class 100 clean bag, Class 1000 super clean room


  • Dimension
    5x5mm,10x5mm,10x10mm,15x15mm,20x15mm,20x20mm

    50.8mm

    Thickness
    0.5mm,1.0mm