| 稀土掺杂BTO基纳米陶瓷的制备及介电性能 |
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| 引用本文： | 孙家军,何开棘,王开明,李志.稀土掺杂BTO基纳米陶瓷的制备及介电性能[J].电子元件与材料,2012(8):1-4. |
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| 作者姓名： | 孙家军 何开棘 王开明 李志 |
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| 作者单位： | 辽宁科技大学理学院纳米材料研究中心 |
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| 基金项目： | 国家自然科学基金资助项目(No.50272002,No.50372001);辽宁省教育厅重点实验室基金资助项目 |
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| 摘 要： | 采用"连续有序可控爆发式成核"纳米粉体制备技术,以BaCl2、SrCl2.6H2O、TiCl4为原料制备了BaxSr1–xTiO3及BaxSr1–x–yGdyTiO3纳米粉体和陶瓷,研究了所制粉体和陶瓷的微观结构及性能。结果表明:所制纳米粉体分散性好,粒径分布范围窄,平均粒径小于40nm;BaxSr1–xTiO3介电常数随锶掺杂量的增加有增大的趋势,在1 325℃烧结得到的Ba0.7Sr0.3TiO3陶瓷的介电常数最大,达到30 000 F/m。BaxSr1–x–yGdyTiO3介电常数随Gd掺杂量的增加趋于减小,在1 325℃烧结得到的Ba0.8Sr0.18Gd0.02TiO3的介电常数最大,达到近25 000 F/m。
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| 关 键 词： | BaxSr1–xTiO3 分散性 介电常数 介电性能 |
Preparation and dielectric properties of BTO-based nano-ceramic doped with rare-earth |
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| SUN Jiajun,HE Kaiji,WANG Kaiming,LI Zhi.Preparation and dielectric properties of BTO-based nano-ceramic doped with rare-earth[J].Electronic Components & Materials,2012(8):1-4. |
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| Authors: | SUN Jiajun HE Kaiji WANG Kaiming LI Zhi |
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| Affiliation: | (Nanometer Materials Research Center,School of Science,University of Science and Technology Liaoning,Anshan 114051,Liaoning Province,China) |
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| Abstract: | BaxSr1-xTiO3 and BaxSr1-x-yGdyTiO3 nano-powders and ceramics were prepared by the technology of continuous and orderly controlled explosive nucleation nanoparticles powders preparation,and using BaCl2,SrCl2·6H2O,TiCl4 as raw material.The microstructure and properties of prepared powders and ceramics were studied.The results show that the nano-powders possess good dispersion,narrow particle size distribution on the average particle size of less than 40 nm.The permittivities of the BaxSr1-xTiO3 ceramics increase with increasing of Sr doping amount.The permittivity of Ba0.7Sr0.3TiO3 ceramic sintered at 1 325 ℃ reaches the maximum of 30 000 F/m.The permittivities of BaxSr1-x-yGdyTiO3 ceramics decrease with increasing of Gd doping amount.The permittivity of Ba0.8Sr0.18Gd0.02TiO3 ceramic sintered at 1 325 ℃ reaches the maximum of 25 000 F/m. |
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| Keywords: | BaxSr1-xTiO3 dispersion permittivity dielectric properties |
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