| ZrO2掺杂BSTO/MgO复相铁电陶瓷的研究 |
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| 引用本文： | 王宇光,刘敏,周洪庆,陈栋,杨春霞,沈朝忠.ZrO2掺杂BSTO/MgO复相铁电陶瓷的研究[J].兵器材料科学与工程,2008,31(3):35-38. |
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| 作者姓名： | 王宇光 刘敏 周洪庆 陈栋 杨春霞 沈朝忠 |
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| 作者单位： | 南京工业大学,材料科学与工程学院,江苏,南京,210009;南京工业大学,材料科学与工程学院,江苏,南京,210009;南京工业大学,材料科学与工程学院,江苏,南京,210009;南京工业大学,材料科学与工程学院,江苏,南京,210009;南京工业大学,材料科学与工程学院,江苏,南京,210009;南京工业大学,材料科学与工程学院,江苏,南京,210009 |
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| 摘 要： | 在Ba0.55Sr0.45TiO3(BSTO)与质量分数为55%的MgO混合的基础上,进行ZrO2掺杂的系统研究。结果表明,随着ZrO2掺入量的增加,BSTO/MgO材料的损耗基本保持不变,调谐性显著提高,但过量的ZrO2掺杂使得材料的调谐性降低。当ZrO2掺杂1%(摩尔分数)时,BST/MgO材料的介电常数为117,介电损耗为3.95×10-3(3.2GHz),介电常数调谐性达9.9%(2.0kV/mm)。利用电介质理论分析ZrO2对BST/MgO材料介电性质的改性机理。
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| 关 键 词： | 钛酸锶钡 ZrO2 介电常数 介电损耗 铁电材料 调谐性 |
| 文章编号： | 1004-244X(2008)03-0035-03 |
| 修稿时间： | 2007年7月23日 |
Effect of ZrO2 doping on the tunable and dielectric properties of BSTO/MgO composite ferroelectric ceramic |
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| WANG Yu-guang,LIU Min,ZHOU Hong-qing,CHEN Dong,YANG Chun-xia,SHEN Chao-zhong.Effect of ZrO2 doping on the tunable and dielectric properties of BSTO/MgO composite ferroelectric ceramic[J].Ordnance Material Science and Engineering,2008,31(3):35-38. |
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| Authors: | WANG Yu-guang LIU Min ZHOU Hong-qing CHEN Dong YANG Chun-xia SHEN Chao-zhong |
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| Abstract: | Based on (MgO) =55% magnesia mixed with Ba0.55Sr0.45TiO3(BSTO), the influence of ZrO2 dopant on the dielectric properties of BSTO /MgO was investigated. The results show that with the increase of the quality of ZrO2 dopant, the loss tangents of BSTO/MgO material remain basically unchanged and tunability significantly enhanced, but excess quantity of ZrO2 would lower tunability. When the quantity of ZrO2 was 1%, BST/MgO material with dielectric constant was equal to 117, and dielectric loss of 3.95×10-3 (3.2 GHz), the dielectric constant tunability 9.9% (2.0 kV/mm) could be obtained. By virtue of the theory of dielectric, the modified mechanism of the influence of ZrO2 dopant on the dielectric properties of BST/MgO was analysed. |
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| Keywords: | ZrO2 |
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