Applicability of the Bruggeman Equation for Analyzing Dielectric Slurries Containing Ceramic Powders with High Permittivity

被引：13

作者：

Zhou, Wei ^{[1
,2
]}

Hinojosa, Beverly Brooks ^{[1
]}

Nino, Juan C. ^{[1
]}

机构：

[1] Univ Florida, Dept Mat Sci & Engn, Gainesville, FL 32611 USA

[2] Beijing Technol & Business Univ, Sch Sci, Beijing 100048, Peoples R China

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 2012年 / 95卷 / 02期

基金：

美国国家科学基金会; 中国国家自然科学基金;

关键词：

TITANATE FINE PARTICLES; SPECTROSCOPY; COMPOSITE; CONSTANT;

D O I：

10.1111/j.1551-2916.2011.05010.x

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Based on effective medium theory, the Bruggeman equation and Maxwell-Wagner (M-W) equation were applied to extract the permittivity of SrTiO3 and BaTiO3 powders in slurries with various solids loadings. It was found that the margin of error for the calculated permittivity broadened with decreasing solids loading and increasing powder permittivity. However, the margin of error for permittivity calculated from the Bruggeman equation is consistently smaller than that from the M-W equation. This smaller margin of error resulted in the applicability of the Bruggeman equation to extract the permittivity for all of the slurries in this work, in contrast to the M-W equation which is restricted to dilute SrTiO3 slurries. Therefore, for slurries of powders with high permittivity (e. g., BaTiO3) or slurries with high solid loading the Bruggeman equation is necessary instead of the M-W equation.

引用

页码：457 / 460

页数：4

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