| BST-SiO_2-B_2O_3系铁电微晶玻璃陶瓷的制备和研究 |
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| 引用本文： | 李建康,张斌.BST-SiO_2-B_2O_3系铁电微晶玻璃陶瓷的制备和研究[J].电子元件与材料,2008,27(11). |
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| 作者姓名： | 李建康 张斌 |
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| 作者单位： | 1. 苏州科技学院,数理学院,江苏,苏州,215009
2. 同济大学,功能材料研究所,上海,200092 |
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| 基金项目： | 江苏省自然科学基金，江苏省高校自然科学基金 |
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| 摘 要： | 采用sol-gel工艺制备了(Ba0.5Sr0.5)TiO3(BST)-SiO2-B2O3系铁电玻璃陶瓷。对其显微结构进行了分析,并通过阻抗分析仪测试其介电温谱(–50~+100℃)。结果表明:SiO2-B2O3系BST铁电玻璃陶瓷的相结构为立方钙钛矿相,显微结构呈微晶结构,当BST相与玻璃相的摩尔比为4:1时,颗粒平均粒径为1.35μm。随着SiO2-B2O3玻璃相含量的增加,εr明显降低,同时居里峰宽化,tC向低温方向移动。
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| 关 键 词： | 无机非金属材料 BST 玻璃陶瓷 sol-gel工艺 钙钛矿相 |
Preparation and research of BST-SiO_2-B_2O_3 system ferroelectric microcrystalline glass-ceramics |
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| LI Jian-kang,ZHANG Bin.Preparation and research of BST-SiO_2-B_2O_3 system ferroelectric microcrystalline glass-ceramics[J].Electronic Components & Materials,2008,27(11). |
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| Authors: | LI Jian-kang ZHANG Bin |
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| Affiliation: | LI Jian-kang1,ZHANG Bin2 (School of Mathematics , Physics,Suzhou University of Science , Technology,Suzhou 215009,Jiangsu Province,China,2. Institute of Functional Materials,Tongji University,Shanghai 200092,China) |
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| Abstract: | (Ba0.5Sr0.5)TiO3(BST)-SiO2-B2O3 ferroelectric glass-ceramics were prepared by sol-gel technology. The microstructures were analyzed and the permittivities as a function of temperature at different frequencies range from –50 ℃ to 100 ℃ were also tested by impedance analyzer. The results show that BST-SiO2-B2O3 ferroelectric glass-ceramics possess cubic perovskite phase and microcrystalline structure. The mean particle size is 1.35 μm when the mole ratio of BST phase to glass phase is 4:1. εr is significantly decreased, Curie peak is broadened and Curie temperature shifts to lower temperature with the increase of SiO2-B2O3 glass phase content. |
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| Keywords: | BST |
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