Optical constants of SrTiO3 (Strontium titanate, STO)
Wöhlecke et al. 1977: Microcrystalline; n 0.3–1.0 µm
Complex refractive index (n+ik)
Derived optical constants
Dispersion formula
$$n^2-1=\frac{2.9489λ^2}{λ^2-0.17712^2}$$Comments
Microcrystalline 1–4 µm thin film. Prepared by RF sputter deposition at 500 K substrate temperature.
References
M. Wöhlecke, V. Marrello, A. Onton. Refractive index of BaTiO3 and SrTiO3 films. J. Appl. Phys. 48, 1748–1750 (1977)
Data
Additional information
About Strontium titanate
Strontium titanate (SrTiO3) is a crystalline solid that is often transparent or pale yellow. It possesses perovskite structure and has garnered significant attention in the field of materials science and solid-state physics due to its intriguing dielectric, ferroelectric, and optical properties. SrTiO3 is widely used as a substrate material for growing high-temperature superconductors, magnetic films, and other oxide thin films. Its high refractive index has also made it popular as a diamond simulant in jewelry, although this use has decreased in favor of more modern materials. In addition, it's used in electronics as a high-k dielectric in DRAM capacitors. The compound can be naturally found in a mineral called perovskite, but most commercial SrTiO3 is synthetically produced.
Other names and variations:- SrTiO3