A simple solution route to the synthesis of pure La2Ti2O7 and Nd2Ti2O7 at 700-800°C by polymerized complex method

Maria M. Milanova, Masato Kakihana, Momoko Arima, Masatomo Yashima, Masahiro Yoshimura

研究成果: Article査読

64 被引用数 (Scopus)

抄録

A polymerized complex technique was utilized to prepare high-purity La2Ti2O7 and Nd2Ti2O7. Heating of mixed solutions of citric acid (CA), ethylene glycol (EG), La (or Nd) and Ti ions with a molar ratio of CA:EG:La(or Nd):Ti = 5:20:1:1 at 130°C produced a yellowish transparent polymeric gel without any precipitation, which was subsequently used as a precursor for the production of La2Ti2O7 and Nd2Ti2O7. We suggest, based on the results of 13C NMR spectroscopy, that mixed-metal chelate complexes, (La,Ti)-CAn or (Nd,Ti)-CAn, formed in starting CA-EG solutions. The formation of pure La2Ti2O7 and Nd2Ti2O7 occurred when the precursor was heat treated in a furnace set at 700°C and 800°C respectively in static air for 4 h.

本文言語English
ページ(範囲)6-10
ページ数5
ジャーナルJournal of Alloys and Compounds
242
1-2
DOI
出版ステータスPublished - 1996 9 15
外部発表はい

ASJC Scopus subject areas

  • 材料力学
  • 機械工学
  • 金属および合金
  • 材料化学

フィンガープリント

「A simple solution route to the synthesis of pure La<sub>2</sub>Ti<sub>2</sub>O<sub>7</sub> and Nd<sub>2</sub>Ti<sub>2</sub>O<sub>7</sub> at 700-800°C by polymerized complex method」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

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