Spherical shape BaNd2Ti5O14 powders prepared by spray pyrolysis

Jin Man Han, Dae Soo Jung, Jung Sang Cho, Yun Chan Kang

Research output: Contribution to journalArticle

Abstract

Spherical shape BaNd2Ti5O14 (BNT) powders were prepared by post-treatment of the precursor powders obtained by spray pyrolysis. The mean size and geometric standard deviation of the powders prepared at a low flow rate of the carrier gas as 5 Lmin-1 were 0.73μm and 1.30. The powders post-treated at a temperature of 1000°C had a single phase of BNT without impurity peaks. The BNT powders had similar compositions to that of the spray solution. Necking between the powders occurred at a sintering temperature of 1100°C. The BNT powders with spherical shape changed to the rod-like crystals after sintering at temperatures above 1200°C. The aspect ratio of the rod-like crystals increased with increasing the sintering temperatures.

Original languageEnglish
Pages (from-to)1289-1294
Number of pages6
JournalJournal of the Ceramic Society of Japan
Volume116
Issue number1360
DOIs
Publication statusPublished - 2008 Dec

Keywords

  • Dielectric material
  • Spray pyrolysis
  • Titanate

ASJC Scopus subject areas

  • Ceramics and Composites
  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry

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