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| Al2O3不同掺杂方式对钛酸钡介电性能的影响 | |
| 引用本文： | 沈振江,邴丽娜,陈万平,陈燕,江向平,龚少华. Al2O3不同掺杂方式对钛酸钡介电性能的影响[J]. 绝缘材料, 2012, 45(1): 42-44,48 |
| 作者姓名： | 沈振江 邴丽娜 陈万平 陈燕 江向平 龚少华 |
| 作者单位： | 1. 海南师范大学物理与电子工程学院,海口,571158 2. 武汉大学物理科学与技术学院,武汉,430072 3. 景德镇陶瓷学院材料科学与工程学院,江西景德镇,333000 |
| 基金项目： | 国家自然科学基金，海南省自然科学基金，海南师范大学青年教师启动基金 |
| 摘 要： | 采用固相法制备了掺杂1 mol%Al2O3和1mol%Al2O3-2mol%BaO两组钛酸钡陶瓷样品。结果表明:Al2O3两种掺杂方式对钛酸钡的作用效果存在差异,其中Al2O3-2BaO共掺杂的作用效果较强,这与不同掺杂方式所引起的钛酸钡陶瓷的晶格变化差异有关。两种掺杂方式均使钛酸钡陶瓷的εmax减小,居里温度降低,介质损耗降低,同时伴有介温峰展宽,且由于弥散相变的存在其室温介电常数呈增大之势。 |
| 关 键 词： | 钛酸钡 固相法 氧化铝 掺杂 介电性能 |
Effects of Al2O3 and Al2O3-2BaO Doping on the Dielectric Property of Barium Titanate |
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| Shen Zhenjiang , Bing Lina , Chen Wanping , Chen Yan , Jiang Xiangping , Gong Shaohua. Effects of Al2O3 and Al2O3-2BaO Doping on the Dielectric Property of Barium Titanate[J]. Insulating Materials, 2012, 45(1): 42-44,48 | |
| Authors: | Shen Zhenjiang Bing Lina Chen Wanping Chen Yan Jiang Xiangping Gong Shaohua |
| Affiliation: | 1(1.College of Physics and Electronic Engineering,Hainan Normal University,Haikou 571158,China;2.School of Physics and Technology,Wuhan University,Wuhan 430072,China;3.School of Materials Science and Engineering,Jingdezhen Ceramic Institute,Jingdezhen 333000,China) |
| Abstract: | Two groups of barium titanate ceramic doped respectively by 1mol% Al2O3 and 1mol% Al2O3-2mol% BaO were prepared by solid state method.The results show that the two doping methods lead to different effects due to different crystal lattice change in the two groups of barium titanate ceramic,and the effect by 1mol% Al2O3-2mol% BaO doping method is greater.Two doping methods both decrease the εmax,Curie temperature and dielectric loss of the barium titanate ceramic,and broaden the dielectric peak.The dielectric constant at room temperature increases because of the existence of diffuse phase transition. |
| Keywords: | barium titanate solid state method Al2O3 doping dielectric property |
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