Preparation of La2Zr2O7 by Sol—Gel Route

Hiroyasu Kido, Sridhar Komarneni, Rustum Roy

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Abstract

The La2Zr2O7 phase was prepared from metal acetylacetonates by a sol—gel route without any intermediate phase formation. X‐ray peaks appeared at a temperature as low as 500°C at the positions expected for La2Zr2O7, although they were broad. The crystal structure of La2Zr2O7 was found to be of the fluorite type below 900°C and of thepyrochlore type above 1000°C. The substitution of a small amount of Eu for La was carried out to investigate the crystal structure from the viewpoint of fluorescence, and these results confirmed the formation of fluorite type La2Zr2O7 below 900°C.

Original languageEnglish (US)
Pages (from-to)422-424
Number of pages3
JournalJournal of the American Ceramic Society
Volume74
Issue number2
DOIs
StatePublished - Feb 1991

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Materials Chemistry

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