Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10632034 | Materials Research Bulletin | 2005 | 18 Pages |
Abstract
Various articles have reported that a highly pure and uniform form of barium titanate can be prepared by homogeneous precipitation. However, most of these works emphasize the mechanism of thermal decomposition of barium titanyl oxalate tetrahydrate, and only a few have discussed morphology or particle size. The morphology and particles size of barium titanyl oxalate tetrahydrate are governed by reaction temperature, pH value and solvent ratio; the barium titanate structure can be obtained by calcinating barium titanyl oxalate tetrahydrate above 600 °C or hydrothermally in a basic solution at 200 °C. The final morphology of barium titanate in this investigation was similar to that of barium titanyl oxalate tetrahydrate and the particle size of barium titanate increased with the calcination temperature. Using this barium titanate in a polymer/ceramic composite provided better dielectric characteristics than commercial ceramic powders use in embedded capacitor applications.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Jyh-Ming Hwu, Wen-Huai Yu, Wei-Chun Yang, Yu-Wen Chen, Yeh-Yu Chou,