Microstructures and Dielectric Properties of Ba_（1-x）Sr_xTiO_3 Ceramics Doped with B_2O_3-Li_2O Glasses for LTCC Technology Applications

材料科学技术（英文）, 2012, 28(3): 280-284.

Microstructures and Dielectric Properties of Ba_（1-x）Sr_xTiO_3 Ceramics Doped with B_2O_3-Li_2O Glasses for LTCC Technology Applications

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1.Key Laboratory of Instrumentation Science ＆ Dynamic Measurement, Ministry of Education, National Key Labora- tory of Science and Technology on Electronic Test and Measurement （North University of China）, Taiyuan 030051, China

2.Key Laboratory of Instrumentation Science ＆ Dynamic Measurement, Ministry of Education, National Key Labora- tory of Science and Technology on Electronic Test and Measurement （North University of China）, Taiyuan 030051, China

3.Key Laboratory of Instrumentation Science ＆ Dynamic Measurement, Ministry of Education, National Key Labora- tory of Science and Technology on Electronic Test and Measurement （North University of China）, Taiyuan 030051, China

4.Key Laboratory of Instrumentation Science ＆ Dynamic Measurement, Ministry of Education, National Key Labora- tory of Science and Technology on Electronic Test and Measurement （North University of China）, Taiyuan 030051, China

5.Functional Materials Research Laboratory, Tongji University, Shanghai 200092, China

基金项目: the Ministry of Sciences and Technology of China through 973-project under Grant No.2009CB623302 the National Natural Science Foundation of China under Grant No. 51175483 support from Functional Materials Research Laboratory, Tongji University, China Program for the Outstanding Innovative Teams of High Learning Institutions of Shanxi

关键词：钛酸锶钡陶瓷 , LTCC技术 , 微波应用 , 掺杂 , 眼镜 , 微结构 , B2O3 , 低温共烧陶瓷

Microstructures and Dielectric Properties of Ba_（1-x）Sr_xTiO_3 Ceramics Doped with B_2O_3-Li_2O Glasses for LTCC Technology Applications

Keywords： Sintering Ferroelectricity Dielectric properties Microstructure ,

Ba1-xSrxTiO3 ceramics, doped with B2O3-Li2O glasses have been fabricated via a traditional ceramic process at a low sintering temperature of 900 ℃ using liquid-phase sintering aids. The microstructures and di- electric properties of B2O3-Li2O glasses doped Ba1-xSrxTiO3 ceramics have been investigated systemat- ically. The temperature dependence dielectric constant and loss reveals that B2O3-Li2O glasses doped Ba1-xSrxTiO3 ceramics have di？usion phase transformation characteristics. For 5 wt% B2O3-Li2O glasses doped Ba0.55Sr0.45TiO3 composites, the tunability is 15.4% under a dc-applied electric field of 30 kV/cm at 10 kHz; the dielectric loss can be controlled about 0.0025; and the Q value is 286. These composite ceramics sintered at low temperature with suitable dielectric constant, low dielectric loss, relatively high tunability and high Q value are promising candidates for multilayer low-temperature co-fired ceramics （LTCC） and potential microwave tunable devices applications.

参考文献

[1]	T. Hu;H. Jantunen;A. Uusimaki;S. Leppavuori .Ba_(0.7)Sr_(0.3)TiO_3 powders with B_2O_3 additive prepared by the sol-gel method for use as microwave material[J].Materials science in semiconductor processing,2002(2/3):215-221.
[2]	S.M.Rhim;S.Hong .Effects of B_2O_3 Addition on the Dielectric and Ferroelectric Properties of Ba_(0.7)Sr_(0.3)TiO_3 Ceramic[J].Journal of the American Ceramic Society,2000(5):1145-1148.

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材料期刊网

Microstructures and Dielectric Properties of Ba_（1-x）Sr_xTiO_3 Ceramics Doped with B_2O_3-Li_2O Glasses for LTCC Technology Applications

Microstructures and Dielectric Properties of Ba_（1-x）Sr_xTiO_3 Ceramics Doped with B_2O_3-Li_2O Glasses for LTCC Technology Applications

参考文献