GGG/SGGG/NGG Garnets amagwiritsidwa ntchito ngati epitaxy yamadzimadzi.SGGG subatrates ndi gawo lodzipereka la filimu ya magneto-optical.Muzida zoyankhulirana zowoneka bwino, zimafunikira kugwiritsa ntchito 1.3u ndi 1.5u optical isolator, chigawo chake chachikulu ndi filimu ya YIG kapena BIG. adayikidwa mu magnetic field.