title: Reduction and oxidation of SrCoO2.5 thin films at low temperatures.
abstract: Brownmillerite SrCoO(2.5) (010) thin films synthesized by pulsed laser deposition became amorphous when reduced at low temperatures by CaH(2), indicating that the infinite-layer structure with the square planar Co(2+)O(4) configuration is unstable. Ferromagnetic and conducting perovskite SrCoO(3) epitaxial thin films, on the other hand, were obtained topotactically at room temperature by oxidation with NaClO.
authors.affiliation: Institute for Chemical Research, Kyoto University, Gokasho, Uji, Kyoto 611-0011, Japan. nori@scl.kyoto-u.ac.jp
authors.forename: Noriya
authors.initials: N
authors.lastname: Ichikawa
authors.forename: Monika
authors.initials: M
authors.lastname: Iwanowska
authors.forename: Masanori
authors.initials: M
authors.lastname: Kawai
authors.forename: Christophe
authors.initials: C
authors.lastname: Calers
authors.forename: Werner
authors.initials: W
authors.lastname: Paulus
authors.forename: Yuichi
authors.initials: Y
authors.lastname: Shimakawa