Structural change in a series of protonated layered perovskite compounds, HLnTiO4 (Ln=La, Nd and Y)

Shunsuke Nishimoto, Motohide Matsuda, Stefanus Harjo, Akinori Hoshikawa, Takashi Kamiyama, Toru Ishigaki, Michihiro Miyake

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13 Citations (Scopus)


A deuterated n=1 Ruddlesden-Popper compound, DLnTiO4 (HLnTiO4, Ln=La, Nd and Y), was prepared by an ion-exchange reaction of Na+ ions in NaLnTiO4 with D+ ions, and its structure was analyzed by Rietveld method using powder neutron diffraction data. The structure analyses showed that DLaTiO4 and DNdTiO4 crystallized in the space group P 4 / nmm with a=3.7232(1) and c=12.3088(1) Å, and a=3.7039(1) and c=12.0883(1) Å, respectively. On the other hand, DYTiO4 crystallized in the space group P 21 / c with a=11.460(1), b=5.2920(4), c=5.3628(5) Å and β=90.441(9)°. The loaded protons were found to statistically occupy the sites around an apical oxygen of TiO6 octahedron in the interlayer of these compounds, rather than Na atom sites in NaLnTiO4.

Original languageEnglish
Pages (from-to)1892-1897
Number of pages6
JournalJournal of Solid State Chemistry
Issue number6
Publication statusPublished - Jun 2006


  • Crystal structure
  • Ion-exchange
  • Layered perovskite
  • Neutron diffraction
  • Ruddlesden-Popper phase

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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