title: CaCu3Pt4O12: the first perovskite with the B site fully occupied by Pt(4+).
abstract: A novel A-site ordered perovskite CaCu(3)Pt(4)O(12) was synthesized under high pressure and high temperature of 12 GPa and 1250 degrees C. CaCu(3)Pt(4)O(12) is the first perovskite in which the B site is fully occupied by Pt(4+). The crystal structure refinement based on the synchrotron powder X-ray diffraction data shows that CaCu(3)Pt(4)O(12) crystallizes in the space group Im3 (cubic) with a lattice constant of a = 7.48946(10) A. The magnetic susceptibility data show the antiferromagnetic transition at T(N) = 40 K, which is attributed to the magnetic ordering of Cu(2+) spins with S = 1/2.
authors.affiliation: Department of Chemistry, Graduate School of Science and Engineering, Ehime University, 2-5 Bunky-cho, Matsuyama, Ehime 790-8577, Japan. ikuya@chem.sci.ehime-u.ac.jp
authors.forename: Ikuya
authors.initials: I
authors.lastname: Yamada
authors.forename: Yuka
authors.initials: Y
authors.lastname: Takahashi
authors.forename: Kenya
authors.initials: K
authors.lastname: Ohgushi
authors.forename: Norimasa
authors.initials: N
authors.lastname: Nishiyama
authors.forename: Ryoji
authors.initials: R
authors.lastname: Takahashi
authors.forename: Kohei
authors.initials: K
authors.lastname: Wada
authors.forename: Takehiro
authors.initials: T
authors.lastname: Kunimoto
authors.forename: Hiroaki
authors.initials: H
authors.lastname: Ohfuji
authors.forename: Yohei
authors.initials: Y
authors.lastname: Kojima
authors.forename: Toru
authors.initials: T
authors.lastname: Inoue
authors.forename: Tetsuo
authors.initials: T
authors.lastname: Irifune