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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 Scopus citations

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
StatePublished - Jan 2012
Externally publishedYes

Funding

The synchrotron radiation experiments were performed at SPring-8 with the approval of the Japan Synchrotron Radiation Research Institute. This work was supported by Grants-in-Aid for Science Research (Nos. 19052004 and 22245009 ) from the Ministry of Education, Culture, Sports, Science and Technology (MEXT) of Japan, by CREST. This work was also supported by the Global COE Program “Integrated Material Science ” (No. B-024 ) from MEXT of Japan, by Murata Science Foundation, and by the Japan-U.S. Cooperative Science Program (No. 14508500001 ) from JSPS and NSF. The work at Columbia was supported by US National Science Foundation grant for Materials World Network , DMR-05–02706 and DMR-08–06846 . One of the authors (A.K.) was supported by JSPS for Young Scientists.

Keywords

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

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