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

Journal Article · Sun Jan 15 04:00:00 EST 2012 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1016/j.jssc.2011.10.038· OSTI ID:21612843

Kitada, A; Tsujimoto, Y; Yamamoto, T ^[1]; Kobayashi, Y ^[1]; Narumi, Y ^[2]; Kindo, K ^[2]; Aczel, A A; Luke, G M ^[3]; Uemura, Y J ^[4]; Kiuchi, Y; Ueda, Y ^[2]; Yoshimura, K ^[5]; Ajiro, Y ^[1]; Kageyama, H ^[1]

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1. Department of Energy and Hydrocarbon Chemistry, Faculty of Engineering, Kyoto University, Nishikyo, Kyoto 615-8510 (Japan)
2. Institute for Solid State Physics, University of Tokyo, Kashiwa, Chiba 277-8581 (Japan)
3. Department of Physics and Astronomy, McMaster University, Hamilton, Ontario, L8S 4M1 (Canada)
4. Department of Physics, Columbia University, New York, NY 10027 (United States)
5. Department of Chemistry, Graduate School of Science, Kyoto University, Kyoto 606-8502 (Japan)

We will present the synthesis, structure and magnetic properties of a new quadruple-layered perovskite (CuCl)Ca{sub 2}NaNb{sub 4}O{sub 13}. Through a topotactic ion-exchange reaction with CuCl{sub 2}, the precursor RbCa{sub 2}NaNb{sub 4}O{sub 13} presumably having an incoherent octahederal tliting changes into (CuCl)Ca{sub 2}NaNb{sub 4}O{sub 13} with a 2a{sub p} Multiplication-Sign 2a{sub p} Multiplication-Sign 2c{sub p} superstructure (tetragonal; a=7.73232(5) A, c=39.2156(4) A). The well-defined superstructure for the ion-exchanged product should be stabilized by the inserted CuCl{sub 4}O{sub 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 Prime 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). - Graphical Abstract: We present a quadruple-layered copper oxyhalide (CuCl)Ca{sub 2}NaNb{sub 4}O{sub 13} synthesized through a topotactic ion-exchange reaction of RbCa{sub 2}NaNb{sub 4}O{sub 13} with CuCl{sub 2}. The compound has a well-defined superstructure. Magnetic studies suggest the absence of magnetic order even at 2 K. Highlights: Black-Right-Pointing-Pointer (CuCl)Ca{sub 2}NaNb{sub 4}O{sub 13} was prepared by ion-exchange reaction of RbCa{sub 2}NaNb{sub 4}O{sub 13} with CuCl{sub 2}. Black-Right-Pointing-Pointer Compound has a 2a{sub p} Multiplication-Sign 2a{sub p} Multiplication-Sign 2c{sub p} superstructure (tetragonal; a=7.73 A, c=39.21 A). Black-Right-Pointing-Pointer Such a well-defined superstructure was not observed in the precursor compound. Black-Right-Pointing-Pointer Aleksandrov Prime s theory and Rietveld study suggest a (++0) octahedral tilting (I4/mmm). Black-Right-Pointing-Pointer Magnetic studies revealed the absence of magnetic order down to 2 K.

• OSTI ID: 21612843
• Journal Information: Journal of Solid State Chemistry, Journal Name: Journal of Solid State Chemistry Vol. 185; ISSN 0022-4596; ISSN JSSCBI
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
ACCELERATORS
CHLORIDES
CHLORINE COMPOUNDS
COHERENT SCATTERING
COPPER
COPPER CHLORIDES
COPPER COMPOUNDS
COPPER HALIDES
CRYSTAL LATTICES
CRYSTAL STRUCTURE
CYCLIC ACCELERATORS
DIFFRACTION
ELEMENTS
GROUP THEORY
HALIDES
HALOGEN COMPOUNDS
INTERACTIONS
ION EXCHANGE
LAYERS
MAGNETIC PROPERTIES
MAGNETISM
MAGNETIZATION
MATHEMATICS
METALS
MINERALS
OXIDE MINERALS
OXYGEN COMPOUNDS
OXYHALIDES
PEROVSKITE
PEROVSKITES
PHYSICAL PROPERTIES
PRECURSOR
SCATTERING
SPACE GROUPS
SYMMETRY GROUPS
SYNCHROTRONS
SYNTHESIS
TETRAGONAL LATTICES
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
TWO-DIMENSIONAL CALCULATIONS
X-RAY DIFFRACTION