Synthesis, crystal structure, and magnetic properties of new one-dimensional oxides Ca{sub 3}CoRhO{sub 6} and Ca{sub 3}FeRhO{sub 6}

Journal Article · Sun Aug 01 04:00:00 EDT 1999 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1006/jssc.1999.8319· OSTI ID:679260

Niitaka, Seiji; Kato, Masaki; Yoshimura, Kazuyoshi; Kosuge, Koji ^[1]; Kageyama, Hiroshi ^[2]

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1. Kyoto Univ. (Japan). Div. of Chemistry
2. Univ. of Tokyo (Japan). Inst. for Solid State Physics

One-dimensional compounds Ca{sub 3}CoRhO{sub 6} and Ca{sub 3}FeRhO{sub 6} have been newly synthesized and structurally characterized by Rietveld refinement of powder X-ray diffraction data. Both compounds are isostructural with the rhombohedral K{sub 4}CdCl{sub 6}-type structure (space group R{bar 3}c; Z = 6; Ca{sub 3}CoRhO{sub 6}: a = 9.2017(1) {angstrom}, c = 10.7296(1) {angstrom}; Ca{sub 3}FeRhO{sub 6}: a = 9.1960(1) {angstrom}, c = 10.7861(1) {angstrom}). The structure of Ca{sub 3}CoRhO{sub 6} and Ca{sub 3}FeRhO{sub 6} contains one-dimensional chains consisting of alternating faced-sharing CoO{sub 6}, FeO{sub 6} trigonal prisms, and RhO{sub 6} octahedra, respectively. The magnetic susceptibility of Ca{sub 3}CoRhO{sub 6} exhibits an abrupt drop at 35 K, which is also observed in Sr{sub 3}NiIrO{sub 6} and Ca{sub 3}CoIrO{sub 6}. Ca{sub 3}FeRhO{sub 6} is an antiferromagnet with T{sub N} = 12 K.

• OSTI ID: 679260
• Journal Information: Journal of Solid State Chemistry, Journal Name: Journal of Solid State Chemistry Journal Issue: 1 Vol. 146; ISSN 0022-4596; ISSN JSSCBI
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CALCIUM OXIDES
COBALT OXIDES
CRYSTAL STRUCTURE
EXPERIMENTAL DATA
IRON OXIDES
LATTICE PARAMETERS
MAGNETIC SUSCEPTIBILITY
RHODIUM OXIDES
SYNTHESIS
TEMPERATURE DEPENDENCE
X-RAY DIFFRACTION