| 摘要 |
PROBLEM TO BE SOLVED: To provide a method of manufacturing BaTiO<SB>3</SB>powder containing substantially no coarse particle having over 0.5μm particle diameter and having a fine particle of≤0.3μm average particle diameter and a c/a (ratio of length of c-axis to that of a-axis in perovskite structure) of≥1.0088, more simply compared to a conventional one. SOLUTION: The method of manufacturing the BaTiO<SB>3</SB>is carried out by preliminarily firing a metallic compound mixture which is to form BaTiO<SB>3</SB>by firing at 700-1,000°C, adjusting the quantity of BaCO<SB>3</SB>in the resultant intermediate fired material to 3-8 mol% per total Ba and carrying out main firing at 900-1,050°C. The method of manufacturing the BaTiO<SB>3</SB>powder is carried out by preliminarily firing the metallic compound mixture containing BaCO<SB>3</SB>so that the remaining quantity of BaCO<SB>3</SB>in the intermediate fired material after preliminarily fired is 3-8 mol% and carrying out the main firing of the resultant intermediate fired material so that the powder obtained by the main firing comprises substantially only barium titanate. COPYRIGHT: (C)2006,JPO&NCIPI
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