Effect of Calcination Temperature on the Microstructure and Morphology of Bi_3.25La_0.75Ti₃O₁₂ Powders Synthesized from Polymerized Precursors

Abstract:

Lanthanum-modified bismuth titanate, Bi3.25La0.75Ti3O12 (BLT), powders were prepared from polymerized precursors using citric acid as a chelating agent and ethylene glycol as an esterification agent. The effect of calcination temperature on the microstructure and morphology of powders were studied. It was shown that the pure and normally stoichiometric phase of BLT powders could be obtained at relative low temperature from 550o to 700oC even if the bismuth content is not excess in the starting precursors while the secondary phase could be detected at both lower and higher calcination temperatures. The shape of the BLT grains is also strongly influenced by the calcination temperature.

• Periodical: Key Engineering Materials (Volumes 368-372)
• Pages: 1555-1557
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.368-372.1555
• Online since: February 2008
• Authors: Pin Yang Fang, Hui Qing Fan, Shao Jun Qiu, Lai Jun Liu, Jin Chen
• Keywords: Bi-Layer Structure Perovskites, BLT, Pechinic Method

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