| BaO—TiO2—Sm2O3系陶瓷结构与介电性能研究 |
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| 引用本文： | 邢晓东,谢道华,向勇,张昊,王洪儒,张志萍.BaO—TiO2—Sm2O3系陶瓷结构与介电性能研究[J].压电与声光,2001,23(6):464-466,469. |
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| 作者姓名： | 邢晓东 谢道华 向勇 张昊 王洪儒 张志萍 |
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| 作者单位： | 天津大学电子信息工程学院, |
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| 摘 要： | 研究了BaO-TiO2-Sm2O3(BTS）系材料的结构和介电性能。实验结果证明：在富TiO2区的BTS系中，随着BaO/Sm2O摩尔比的增加，材料的介电常数ε和介电常数的温度系数αε发生变化，XRD分析证明这是因为材料的主晶相发生变化所致。当BaO/Sm2O3＝1．33时，可获得具有超低损耗的热稳定微波陶瓷材料，其主晶相为BaSm2Ti4O12。
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| 关 键 词： | 阻抗频率特性 介电性能 陶瓷结构 |
The Structure and Dielectric Properties of the BaO-TiO_2-Sm_2O_3 System |
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| XING Xiao dong,XIE Dao hua,XIANG Yong,ZHANG Hao,WANG Hong ru,ZHANG Zhi ping.The Structure and Dielectric Properties of the BaO-TiO_2-Sm_2O_3 System[J].Piezoelectrics & Acoustooptics,2001,23(6):464-466,469. |
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| Authors: | XING Xiao dong XIE Dao hua XIANG Yong ZHANG Hao WANG Hong ru ZHANG Zhi ping |
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| Abstract: | The structure and dielectric properties of BaO TiO 2 Sm 2O 3 system are discussed in this paper.It is found that there are variations of dielectric constant and temperature coefficient of dielectric constant with the increase of the molar ratio of BaO to Sm 2O 3 in the rich TiO 2 region of the BTS system and mainly caused,with X ray diffraction,by the vary of main phase.When the ratio of BaO to Sm 2O 3 is 1.33,the microwave dielectric ceramic with very low loss and good thermal stability is obtained and its main phase is BaSm 2Ti 4O 12 . |
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| Keywords: | microwave ceramics main phase grain impedance frequency characteristic grain boundary |
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