title: Cluster-glass behavior of a highly oxygen deficient perovskite, BaBi(0.28)Co(0.72)O(2.2).
abstract: A highly oxygen deficient perovskite, BaBi(0.28)Co(0.72)O(2.2), was synthesized by solid state reaction. The crystal structure was determined by means of neutron and x-ray powder diffraction. The material exhibits semiconducting behavior with an energy gap of 1.8 eV. The electron diffraction study does not reveal long range Bi:Co ordering; instead it shows the existence of short range ordering in this phase. The AC and DC magnetic susceptibility studies reveal cluster-glass behavior, which has its origin in the interacting ferromagnetic clusters present.
authors.affiliation: Los Alamos National Laboratory, Los Alamos, NM 87545, USA. Department of Chemistry, Princeton University, Princeton, NJ 08544, USA.
authors.forename: T
authors.initials: T
authors.lastname: Klimczuk
authors.forename: H W
authors.initials: HW
authors.lastname: Zandbergen
authors.forename: Q
authors.initials: Q
authors.lastname: Huang
authors.forename: T M
authors.initials: TM
authors.lastname: McQueen
authors.forename: F
authors.initials: F
authors.lastname: Ronning
authors.forename: B
authors.initials: B
authors.lastname: Kusz
authors.forename: J D
authors.initials: JD
authors.lastname: Thompson
authors.forename: R J
authors.initials: RJ
authors.lastname: Cava