| 掺钇(Ba,Sr,Ca)TiO_3纳米粉体及细晶陶瓷的制备与性能 |
| |
| 引用本文： | 杜锋涛,程花蕾,崔斌,畅柱国,杨爱武.掺钇(Ba,Sr,Ca)TiO_3纳米粉体及细晶陶瓷的制备与性能[J].电子元件与材料,2010,29(1). |
| |
| 作者姓名： | 杜锋涛 程花蕾 崔斌 畅柱国 杨爱武 |
| |
| 作者单位： | 1. 西北大学,化学与材料科学学院,合成与天然功能分子化学教育部重点实验室
2. 西安北方庆华机电集团有限公司,陕西,西安,710025 |
| |
| 基金项目： | 陕西省教育厅2009年度科学研究计划资助项目(No.09JC01);;陕西省“13115”科技创新工程重大科技专项资助(No.2007ZDKG—61);;西北大学研究生交叉学科资助项目(No.07YJC07) |
| |
| 摘 要： | 采用sol-gel法制备了Y3+掺杂Ba0.90Sr0.08Ca0.02TiO3(BSCT)纳米粉体及细晶陶瓷。通过TG-DTG、XRD、SEM和TEM对样品结构及形貌进行了表征,并测试了陶瓷的介电性能。研究表明,Y3+掺杂BSCT纳米粉体主要为立方相BaTiO3,烧结后陶瓷晶粒尺寸在0.68~2.24μm可控,Y3+掺杂可以抑制陶瓷晶粒的生长,使陶瓷的tC向低温方向移动。随Y3+掺杂量的增大,陶瓷的介电温谱εr-t趋于平缓,当x(Y3+)为7.0%时,陶瓷的室温εr大幅度提高到9 176。
|
| 关 键 词： | Ba0.90Sr0.08Ca0.02TiO3 掺钇 细晶陶瓷 sol-gel法 介电性能 |
Preparation and properties of Y~(3+)-doped (Ba,Sr,Ca)TiO_3 nanopowders and fine-grained ceramics |
| |
| DU Fengtao,CHENG Hualei,CUI Bin,CHANG Zhuguo,YANG Aiwu.Preparation and properties of Y~(3+)-doped (Ba,Sr,Ca)TiO_3 nanopowders and fine-grained ceramics[J].Electronic Components & Materials,2010,29(1). |
| |
| Authors: | DU Fengtao CHENG Hualei CUI Bin CHANG Zhuguo YANG Aiwu |
| |
| Abstract: | Y~(3+)-doped Ba_(0.90)Sr_(0.08)Ca_(0.02)TiO_3(BSCT) nanopowders and fine-grained ceramics were prepared via a sol-gel method.The structure and morphology of samples were characterized by TG-DTG,XRD,SEM and TEM,and the dielectric properties of prepared ceramics were also measured.The results show that the prepared nanopowders were mainly composed of cubic BaTiO_3 phase.The grain size of prepared ceramics can be controlled between 0.68 μm and 2.24 μm.The grain growth of prepared ceramics can be inhibited and Curie temperature shifts to lower temperature.A relatively flat ε_r-t curve is obtained when the Y~(3+)-doping amount increases.ε_r of the ceramics at room temperature increases greatly to 9 176 when the x(Y~(3+)) is 7.0%. |
| |
| Keywords: | Ba0 90Sr0 08Ca0 02TiO3 Y3+-doping fine-grained ceramic sol-gel method dielectric property |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
