Iron-doped strontium titanate and strontium titanate single crystal have a similar structure. At present we can provide Fe:SrTiO3 single crystal substrates with iron doping concentration of: 0.05%, 0.04%
(La,Sr)(Al,Ta)O3 is a relatively mature non-luan crystal perovskite crystal, which is well matched with high-temperature superconductors and various oxide materials.
The lattice mismatch rate between lithium aluminate single crystal and gallium nitride is very small (1.4% for lithium aluminate), making it a high-quality substrate for gallium nitride thin films.