Product Descriptions
Gadolinium gallium garnet (GGG) substrate, one of the earlier developed garnet materials, can not be used as the substrate of high bismuth substituted iron garnet epitaxial layer because of its small lattice constant. Therefore, the sggg crystals with Ca, Mg and Zr as substitution ions are more suitable for the epitaxial films.
主な利点:
Low optical losses (<0.1%/cm)
High thermal conductivity (7.4W m-1K-1)
代表的なアプリケーション：
Substrate materials for YIG and BIG magneto-optical epitaxial membranes
Magnetic bubble memory storage
Magnetic refrigeration
材料特性
| 材料 | GGG | SGGG |
| 化学式 | Gd3Ga5O12 | Substituted Gd3Ga5O12 |
| Crystal Structure | Cubic | Cubic |
| 格子定数 | a=12.383 Å | a=12.497 Å |
| Growth Method | Czochralski | Czochralski |
| Hardness | 8.0 | 7.5 |
| 密度 | 7.13g/cm³ | 7.09g/cm³ |
| 融点 | 1725℃ | 1730℃ |
| Refractive Index | 1.954 @ 1064nm | 1.954 @ 1064nm |
Technical Parameters
Crystro offers:
| Dimensions | Max Diameter 101.6mm (4 inch) |
| Thickness | 0.5mm Other thickness upon request |
| Polishing | Single or double sides polishing |
| Orientation | <111>±0.2° |
| Orientation Flat | 2°（within 1° for special requirement） |
| Ra | Ra≤1nm, EPI ready |
| Angle of Crystalline | Special size and orientation are available upon request |
