HIGH DIELECTRIC-CONSTANT AND SMALL TEMPERATURE-COEFFICIENT BISMUTH-BASED DIELECTRIC COMPOSITIONS

被引:116
作者
LING, HC [1 ]
YAN, MF [1 ]
RHODES, WW [1 ]
机构
[1] AT&T BELL LABS,MURRAY HILL,NJ 07974
关键词
D O I
10.1557/JMR.1990.1752
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
We have studied the crystal structure and the dielectric properties of a series of Bi-based ceramic compositions as a function of compositional variation and sintering temperature. These dielectrics have dielectric constants between 70 and 165 and their temperature coefficients are within ±500 × 10− 6/°C. The precise temperature coefficient can be controlled via compositional changes such that dielectrics with temperature coefficients within ±50 × 10“− 6/°C are easily obtainable. The room temperature dissipation factor is smaller than 0.001 or equivalently, the Q value is greater than 1000. The electrical resistivity is greater than 1014ohm-cm. Furthermore, these dielectrics are sinterable below 960 °C, rendering it possible to use silver or high silver metallization as the internal electrode in making the multilayer ceramic capacitors. © 1990, Materials Research Society. All rights reserved.
引用
收藏
页码:1752 / 1762
页数:11
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