Structural models for intergrowth structures in the phase system Al 2O3-TiO2

Stefan Hoffmann, Stefan T. Norberg, Masahiro Yoshimura

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21 Citations (Scopus)


The phase system Al2O3-TiO2 was investigated in the compositional range from 48:52 to 62:38 mol% Al 2O3:TiO2. The samples were prepared by melting the binary oxides in an arc-imaging furnace and the obtained samples were examined by powder X-ray diffraction. The recorded powder patterns could be interpreted in terms of intergrowth structures consisting of two basic building blocks, which were deduced from the known crystal structures of β-Al 2TiO5 and Al6Ti2O13. The structure of a new ordered compound with the formula Al16Ti 5O34 is proposed. The thermal stability was estimated from DTA and tempering experiments and showed that all prepared samples decompose at temperatures around 800°C into the binary oxides corundum and titania.

Original languageEnglish
Pages (from-to)2897-2906
Number of pages10
JournalJournal of Solid State Chemistry
Issue number9
Publication statusPublished - 2005 Sep

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Inorganic Chemistry
  • Materials Chemistry


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