Paper Title:
Barium Titanate Nanopowders Prepared from the Modified Oxalate Co-Precipitation Method
  Abstract

Barium titanate nanopowders were prepared from the modified oxalate co-precipitation method. Barium chloride dihydrate and potassium titanyl oxalate dihydrate were used as the starting precursors with the mole ratio of Ba:Ti as 1:1. Barium titanyl oxalate complex powders were obtained after adjusting the final of pH of the solution to 1. The precipitates were filtered, washed and dried at 100 oC for 5h. The precipitate powders were calcined at 400-700 oC for 2h. The phase transition was studied by X-ray diffractometry (XRD). Cubic structure of barium titanate was obtained after calcinations at 700 oC for 2h. The morphology and chemical composition were investigated by scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDXS). The range of particle size was 50-100 nm with irregular in shape. The elemental composition of barium, titanium and oxygen showed the characteristic X-ray energy values.

  Info
Periodical
Materials Science Forum (Volumes 561-565)
Main Theme
Edited by
Young Won Chang, Nack J. Kim and Chong Soo Lee
Pages
515-518
DOI
10.4028/www.scientific.net/MSF.561-565.515
Citation
P. Pookmanee, C. Khantha, S. Phanichphant, "Barium Titanate Nanopowders Prepared from the Modified Oxalate Co-Precipitation Method", Materials Science Forum, Vols. 561-565, pp. 515-518, 2007
Online since
October 2007
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