Sol-gel synthesis of Ln2(Ln = La, Nd)Ti207

A. V. Prasadarao, Sridhar Komarneni

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Abstract

Lanthanum and neodymium titanates were prepared by a sol-gel route. Synthesis of La2Ti207 from pure alkoxide precursors yielded an intermediate perovskite type phase, La(1-x)TiO3, which partially transformed to La2Ti207 on heating to 1500 °C. Substitution of the lanthanum acetylacetonate for alkoxide precursor yielded La2Ti207 without any intermediate phase at a very low temperature of 700 °C. Sintering of the La2Ti207 gel powder yielded a highly dense ceramic with —97% theoretical density. Similar sintering treatment resulted in —92% theoretical density for Nd2Ti207.

Original languageEnglish (US)
Pages (from-to)2859-2863
Number of pages5
JournalJournal of Materials Research
Volume7
Issue number10
DOIs
StatePublished - Oct 1992

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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