Synthesis, crystal structure, and magnetic properties of new layered hexagonal perovskite Ba8Ta4Ru8/3Co 2/3O24

E. M. Kopnin, A. A. Belik, R. V. Shpanchenko, E. V. Antipov, F. Izumi, E. Takayama-Muromachi, J. Hadermann

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

A new hexagonal perovskite-type oxide Ba8Ta4Ru 8/3Co2/3O24 was synthesized by the solid-state method at 1573K and characterized by electron diffraction (ED), time-of-flight (TOF) neutron powder diffraction, and magnetic susceptibility. Structure parameters of Ba8Ta4Ru8/3Co2/3O 24 were refined by the Rietveld method from the TOF neutron powder diffraction data on the basis of space group P63/mcm and lattice parameters a=10.0075(1)Å and c=18.9248(2)Å as obtained from the ED data (Z=3). The crystal structure of Ba8Ta4Ru 8/3Co2/3O24 consists of 8-layered (cchc) 2 close-packed stacking of BaO3 layers along the c-axis. Corner-shared octahedra are filled by Ta only and face-shared octahedra are statistically occupied by Ru, Co, and vacancies. Similar compounds Ba 8Ta4Ru8/3M2/3O24 with M=Ni and Zn were also prepared. Magnetic susceptibility measurements showed no magnetic ordering down to 5K.

Original languageEnglish
Pages (from-to)3499-3504
Number of pages6
JournalJournal of Solid State Chemistry
Volume177
Issue number10
DOIs
Publication statusPublished - Oct 2004
Externally publishedYes

Keywords

  • Cation distribution
  • Crystal structure
  • Electron diffraction
  • Hexagonal perovskites
  • Neutron diffraction
  • Ruthenium oxides
  • Superstructure

Fingerprint

Dive into the research topics of 'Synthesis, crystal structure, and magnetic properties of new layered hexagonal perovskite Ba8Ta4Ru8/3Co 2/3O24'. Together they form a unique fingerprint.

Cite this