Optical constants and polarimetric properties of ТіО2–MnO2 thin films

Optical constants of ТіО2–MnO2 (MnO2 content: 0%, 1%, 5%, 10%) thin films prepared by the electron-beam evaporation technique were determined using the envelope method. The optical properties of the TiO2–MnO2 thin films were strongly dependent on the MnO2 content. The TiO2–MnO2 thin films were established to be indirect band semiconductors with the band gap energies Eg: 3.43 eV (TiO2), 2.89 eV (TiO2–MnO2 (1%)) and 2.73 eV (TiO2–MnO2 (5%)). The polarimetric properties of the TiO2–MnO2 thin films were also investigated.

► Optical constants of the TiO2–MnO2 thin films were determined using the envelope method. ► The polarimetric properties of the TiO2–MnO2 thin films were investigated. ► The optical isotropy of the thin films under investigation was established from their polarimetric properties.