title: Oxygen partial pressure dependence of magnetic, optical and magneto-optical properties of epitaxial cobalt-substituted SrTiO₃ films.
abstract: Cobalt-substituted SrTiO3 films (SrTi0.70Co0.30O(3-δ)) were grown on SrTiO3 substrates using pulsed laser deposition under oxygen pressures ranging from 1 μTorr to 20 mTorr. The effect of oxygen pressure on structural, magnetic, optical, and magneto-optical properties of the films was investigated. The film grown at 3 μTorr has the highest Faraday rotation (FR) and magnetic saturation moment (M(s)). Increasing oxygen pressure during growth reduced M(s), FR and optical absorption in the near-infrared. This trend is attributed to decreasing Co2+ ion concentration and oxygen vacancy concentration with higher oxygen partial pressure during growth.
authors.forename: Mehmet C
authors.initials: MC
authors.lastname: Onbaşlı
authors.forename: Taichi
authors.initials: T
authors.lastname: Goto
authors.forename: Astera
authors.initials: A
authors.lastname: Tang
authors.forename: Annia
authors.initials: A
authors.lastname: Pan
authors.forename: Enes
authors.initials: E
authors.lastname: Battal
authors.forename: Ali K
authors.initials: AK
authors.lastname: Okyay
authors.forename: Gerald F
authors.initials: GF
authors.lastname: Dionne
authors.forename: C A
authors.initials: CA
authors.lastname: Ross