Quadruple-layered perovskite (CuCl)Ca 2NaNb 4O 13

A. Kitada, Y. Tsujimoto, T. Yamamoto, Y. Kobayashi, Y. Narumi, K. Kindo, A. A. Aczel, G. M. Luke, Y. J. Uemura, Y. Kiuchi, Y. Ueda, K. Yoshimura, Y. Ajiro, H. Kageyama

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)

Abstract

We will present the synthesis, structure and magnetic properties of a new quadruple-layered perovskite (CuCl)Ca 2NaNb 4O 13. Through a topotactic ion-exchange reaction with CuCl 2, the precursor RbCa 2NaNb 4O 13 presumably having an incoherent octahederal tliting changes into (CuCl)Ca 2NaNb 4O 13 with a 2a p×2a p×2c p superstructure (tetragonal; a=7.73232(5) Å, c=39.2156(4) Å). The well-defined superstructure for the ion-exchanged product should be stabilized by the inserted CuCl 4O 2 octahedral layers that firmly connect with neighboring perovskite layers. Magnetic studies show the absence of long-range magnetic ordering down to 2 K despite strong in-plane interactions. Aleksandrov′s group theory and Rietveld refinement of synchrotron X-ray diffraction data suggest the structure to be of I4/mmm space group with in-phase tilting along the a and b axes, a two-tilt system (0).

Original languageEnglish
Pages (from-to)10-17
Number of pages8
JournalJournal of Solid State Chemistry
Volume185
DOIs
Publication statusPublished - 2012 Jan

Keywords

  • (CuCl)Ca NaNb O
  • Crystal structure
  • Ion-exchange reaction
  • Magnetism
  • Quadruple-layered perovskite
  • Two-dimensional magnet

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

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