Conversion process of strontium-titanium bimetallic methoxyethoxide precursor into SrTiO3 via hydrolysis/calcination

Junko Okayama, Itaru Takaya, Keiichi Nashimoto, Yoshiyuki Sugahara

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The conversion of a Sr-Ti bimetallic methoxyethoxide precursor into SrTiO3 via hydrolysis and/or calcination was investigated. Hydrolysis with various water/metal molar ratios (rH; rH = 0.5, 2, 4, 6, 8, 10) in tetrahydrofuran at reflux resulted in a decrease in the amount of the methoxyethoxyl groups, and the hydrolyzed products were soluble with rH ≤ 2. At rH ≥ 8, SrTiO3 was crystallized without calcination. Both the hydrolyzed and unhydrolyzed precursors (rH = 0, 0.5, 2) were calcined in dry air at 550°-800°C. SrTiO3 was crystallized on calcination at ≥550°C from amorphous materials with a considerable loss of carbon, which was present as both chars and carbonate ions.

Original languageEnglish
Pages (from-to)2195-2199
Number of pages5
JournalJournal of the American Ceramic Society
Issue number9
Publication statusPublished - 2002 Sep


ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry

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