Low-fire processing of voltage-tunable Ba0.6Sr0.4TiO3 dielectric

被引：3

作者：

Lu, Yu ^{[1
]}

Jean, Jau-Ho ^{[1
]}

机构：

[1] Natl Tsing Hua Univ, Dept Mat Sci & Engn, Hsinchu, Taiwan

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS | 2007年 / 46卷 / 6A期

关键词：

voltage-tunable dielectric; liquid-phase sintering;

D O I：

10.1143/JJAP.46.3481

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

By adding a low-softening-point Li2O-B2O3-SiO2-CaO-Al2O3 (LBSCA) glass, the voltage-tunable Ba0.6Sr0.4TiO3 (BST64) ceramics can be densified at 900 degrees C, which is 400-500 degrees C lower than the temperature for producing the pure BST64. This is caused by liquid-phase sintering and an interfacial reaction taking place at the interface of LBSCA/Ba0.6Sr0.4TiO3. For the samples with 10-35 vol % LBSCA glass, a high relative sintered density of >95% is obtained at 900 degrees C and the resulting dielectric composites have a dielectric constant and loss at 1 MHz in the ranges of 1040-145 and 0.4-1.0%, respectively. The voltage tunability of the resulting LBSCA+BST64 dielectric at 1 MHz and 1 kV/mm is in the range of 0.8-8%, which exhibits a decreasing trend with increasing LBSCA content.

引用

页码：3481 / 3484

页数：4

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