title: Synthesis of cubic SrCoO3 single crystal and its anisotropic magnetic and transport properties.
abstract: A large-size single crystal of nearly stoichiometric SrCoO(3) was prepared with a two-step method combining the floating-zone technique and subsequent high oxygen pressure treatment. SrCoO(3) crystallizes in a cubic perovskite structure with space group Pm3m, and displays an itinerant ferromagnetic behavior with the Curie temperature of 305 K. The easy magnetization axis is found to be along the [111] direction, and the saturation moment is 2.5 µ(B)/f.u., in accord with the picture of the intermediate spin state. The resistivity at low temperatures (T) is proportional to T(2), indicative of the possible effect of orbital fluctuation in the intermediate spin ferromagnetic metallic state. Unusual anisotropic magnetoresistance is also observed and its possible origin is discussed.
authors.affiliation: Exploratory Research for Advanced Technology, Japan Science and Technology Agency, c/o RIKEN Advanced Science Institute, Wako, Japan. ywlong@riken.jp
authors.forename: Youwen
authors.initials: Y
authors.lastname: Long
authors.forename: Yoshio
authors.initials: Y
authors.lastname: Kaneko
authors.forename: Shintaro
authors.initials: S
authors.lastname: Ishiwata
authors.forename: Yasujiro
authors.initials: Y
authors.lastname: Taguchi
authors.forename: Yoshinori
authors.initials: Y
authors.lastname: Tokura
mesh_terms: D016880:Anisotropy; D003035:Cobalt / Q000737:chemistry*; D003460:Crystallization; D004574:Electromagnetic Fields; D004579:Electron Transport; D010087:Oxides / Q000737:chemistry*; D013324:Strontium / Q000737:chemistry*
chemical_list: D010087:Oxides; D003035:Cobalt; C060728:cobalt oxide; D013324:Strontium