| Na~+掺杂量对BaBiO_3基陶瓷NTC特性的影响 |
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| 引用本文： | 李川,刘心宇,石雨,王小军.Na~+掺杂量对BaBiO_3基陶瓷NTC特性的影响[J].电子元件与材料,2009,28(5). |
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| 作者姓名： | 李川 刘心宇 石雨 王小军 |
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| 作者单位： | 1. 桂林电子科技大学,信息材料科学与工程系,广西,桂林,541004
2. 桂林电子科技大学,信息材料科学与工程系,广西,桂林,541004;中南大学,材料科学与工程学院,湖南,长沙,410083 |
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| 基金项目： | 广西自然科学基金，桂林电子科技大学基金 |
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| 摘 要： | 以BaCO3、Bi2O3为原料,Na2C2O4为掺杂剂,用传统固相法制备了具有NTC特性的BaBi1–xNaxO3陶瓷。用XRD,SEM和ρ-t特性测量仪,研究了Na+掺杂量对该陶瓷的物相、显微结构及电性能的影响。结果表明:BaBi1–xNaxO3陶瓷的B25/85值和室温电阻率ρ25均随着x(Na2C2O4)的增加呈现先减小后变大的趋势;当x(Na2C2O4)为0.050时,获得了具有较好NTC特性的试样,其ρ25为2200?·cm,B25/85值为3365K。
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| 关 键 词： | BaBiO3 NTC特性 Na+掺杂量 电性能 |
Effect of Na~+-doped amount on the NTC characteristics of the BaBiO_3 based ceramics |
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| LI Chuan,LIU Xinyu,SHI Yu,WANG Xiaojun.Effect of Na~+-doped amount on the NTC characteristics of the BaBiO_3 based ceramics[J].Electronic Components & Materials,2009,28(5). |
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| Authors: | LI Chuan LIU Xinyu SHI Yu WANG Xiaojun |
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| Affiliation: | 1. Department of Information Material Science and Engineering;Guilin University of Electronic Technology;Guilin 541004;Guangxi Zhuangzu Zizhiqu;China;2. College of Material Science and Engineering;Central South University;Changsha 410083;China |
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| Abstract: | Using BaCO3、Bi2O3 as raw materials, Na2C2O4 as dopant, the Na+-doped BaBi1–xNaxO3 based ceramics with NTC characteristics were prepared by conventional solid-state method. The effects of Na+-doped amount on the phase structure, microstructure and electrical properties were investigated by XRD, SEM and p-t characteristic tester. The results show that with increase of the Na+-doped amount, the ρ25 and B25/85 value of the ceramic sample first decrease, and then increase again. When x (Na2C2O4)=0.050, the ceramic sample with better NTC characteristics is obtained and its ρ25 is 2 200 ?·cm and B25/85 value is 3 365 K. |
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| Keywords: | BaBiO3 |
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