Sintering and dielectric properties of hydrothermally synthesized cubic and tetragonal BaTiO3 powders

被引：39

作者：

Zhu, WD ^{[1
]}

Akbar, SA ^{[1
]}

Asiaie, R ^{[1
]}

Dutta, PK ^{[1
]}

机构：

[1] OHIO STATE UNIV,DEPT CHEM,COLUMBUS,OH 43210

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS | 1997年 / 36卷 / 1A期

关键词：

barium titanate; BaTiO3; hydrothermal synthesis; sintering; dielectric properties; polycrystalline;

D O I：

10.1143/JJAP.36.214

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The sintering behavior of hydrothermally synthesized cubic and tetragonal BaTiO3 powders was studied as a function of temperature. In addition, the dielectric properties of the sintered samples were examined from room temperature to 200 degrees C at a frequency of 1 kHz. The influence of powder characteristics and sintering temperature on the microstructure development and dielectric properties were investigated. it was found that tetragonal powders showed limited grain growth and higher final density upon sintering, whereas the cubic powder exhibited abnormal grain growth and lower density, This was attributed to more disperse and homogeneous particles in the tetragonal powders with fewer defects, as compared to the cubic powder. Correlations between the microstructure and the dielectric properties were developed. As expected, samples with finer grain size and higher density exhibited higher dielectric constant and lower loss.

引用

页码：214 / 221

页数：8

共 45 条

[1]

ANLIKER M, 1954, HELV PHYS ACTA, V27, P99

[2] DIELECTRIC-PROPERTIES OF FINE-GRAINED BARIUM-TITANATE CERAMICS [J].