| Sm2O3掺杂BSTN陶瓷的制备与介电性能 |
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| 引用本文： | 李波,沈雷军,王忠志,高乐乐,周永勃.Sm2O3掺杂BSTN陶瓷的制备与介电性能[J].稀土,2012,33(1):19-23. |
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| 作者姓名： | 李波 沈雷军 王忠志 高乐乐 周永勃 |
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| 作者单位： | 稀土冶金及功能材料国家工程研究中心,内蒙古包头014030;包头稀土研究院,内蒙古包头014030 |
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| 摘 要： | 采用溶胶凝胶法制备了Sm3+掺杂(Ba,Sr)TiO3/(Ba,Sr)Nb2O6复相陶瓷,XRD衍射表明,样品由钙钛矿相和钨青铜相组成,无其他杂相生成。随着Sm3+掺杂量的增加,样品衍射峰向小角度方向移动,表明掺杂的Sm3+取代了体系中Nb5+及Ti4+。检测了样品的介电-温度性能,结果表明,随着Sm3+掺杂量的增加,样品的介电常数及介电损耗都有所降低,当Sm3+掺杂量达到0.004时,样品介电损耗最低,再增加Sm3+的掺杂量,样品的介电损耗又出现增加的趋势。可以得出,适量Sm3+的掺杂可以有效降低样品的介电损耗。
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| 关 键 词： | 溶胶凝胶法 稀土 介电性能 |
Study of Structural and Dielectrical Properties of Sm3 + - doped BSTN Ceramics |
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| LI Bo
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SHEN Lei-jun
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WANG Zhong-zhi
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GAO Le-le
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ZHOU Yong-bo.Study of Structural and Dielectrical Properties of Sm3 + - doped BSTN Ceramics[J].Chinese Rare Earths,2012,33(1):19-23. |
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| Authors: | LI Bo SHEN Lei-jun WANG Zhong-zhi GAO Le-le ZHOU Yong-bo |
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| Affiliation: | 1,2(1.National Engineering Research Center of Rare Earth Metallurgy and Functional Meterials,Baotou 014030,China; 2.Baotou Research Institute of Rare Earths,Baotou 014030,China) |
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| Abstract: | Series of Sm3+-doped(Ba,Sr) TiO3/(Ba,Sr) Nb2O6 composite ceramics were synthesized by sol-gel method.XRD patterns showed that the samples consisted of perovskite phase and tungsten bronze phase.With the increasing of doping amount of Sm,the sample diffraction peaks move to small-angle direction,which indicates that Sm3+ has replaced the Nb5+or Ti4+ lattice position in system.Dielectric performance test shows that dielectric constant and dielectric loss reduce with increasing of doping amount of Sm3+.When doping concentration of Sm3+ reaches 0.004,the dielectric loss is minimal.It can be confirmed that appropriate concentration of Sm3+ can significantly reduce the dielectric loss of the sample. |
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| Keywords: | sol-gel rare earth dielectric properties |
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