GGG (12.373Å) has a similar lattice constant of YIG (12.376Å), it is widely used as the substrate material of YIG magneto-optical thin film. However, in order to improve the magneto-optical optimum value of magneto-optical thin film, sometimes it is necessary to select a single crystal substrate with a larger lattice constant. GSGG (12.554Å) is that the 2 Ga of the octahedron in the GGG crystal are replaced by Sc with a larger ionic radius, thus having a larger lattice constant.
OST Photonics offers high quality GSGG substrates for researchers and industries. Crystal size and thickness can be customized according to your requirements.