Titanium dioxide (TiO2) is a paraelectric material used in ceramic capacitors and in memristors because of its ferroelectric properties.
The ferroelectric behavior states that the titanium dioxide molecules change polarization when an electric field is applied. In ceramic capacitors, the titanium dioxide forms a thin layer that acts as a dielectric between the electrodes. In addition, titanium dioxide (TiO2) and barium carbonate (BaCO3) are used to produce barium titanate( BaTiO3), which is used inPTCthermistors.
Titanium dioxide is one of the high-k dielectrics. It has an extremely high permittivity of 80 and a large bandgap, wide bandgap (WBG), of 3.5 electron volts( eV). As an n-type semiconductor, titanium dioxide is also used in dye cells. The photosensitivity is in the UV range at wavelengths below 400 nm.