Preparation of LiTaO3 powders at reduced temperatures by a polymerized complex method

Judit Szanics, Toru Okubo, Masato Kakihana

研究成果: Article査読

25 被引用数 (Scopus)

抄録

A polymerized complex technique was utilized to prepare LiTaO3 at reduced temperatures, viz. 500-600°C. A methanol-citric acid (CA) solution of TaCl5 was found to be highly resistant to ambient moisture in air. Heating of a mixed-solution of methanol, CA, ethylene glycol (EG), Li and Ta ions with a molar ratio of [Methanol]:[CA]:[EG]:[Li]:[Ta]=1:0.1:0.4:0.01:0.01 at 130°C produced a yellow transparent polymeric gel without any precipitation, which after pyrolysis at 300°C was converted to a powder precursor for LiTaO3. The formation of pure LiTaO3 occurred during the heat treatment of the powder precursor at temperatures higher than 500°C in static air, which was confirmed by a combined analysis using XRD and Raman scattering techniques. No X-ray diffraction and Raman spectroscopic evidence for phase separation of crystalline Li2CO3 and Ta2O5 as distinct intermediates has been obtained during the thermal decomposition of the powder precursor.

本文言語English
ページ(範囲)206-210
ページ数5
ジャーナルJournal of Alloys and Compounds
281
2
DOI
出版ステータスPublished - 1998 12 18
外部発表はい

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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