| 低电阻率、大升阻比BaTiO_3基PTCR陶瓷材料 |
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| 引用本文： | 毛翠萍,陈亿裕,韩晓东,江涛.低电阻率、大升阻比BaTiO_3基PTCR陶瓷材料[J].电子元件与材料,2003,22(11):35-37. |
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| 作者姓名： | 毛翠萍 陈亿裕 韩晓东 江涛 |
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| 作者单位： | 华南理工大学电子材料科学与工程系,广东,广州,510640 |
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| 摘 要： | 研究了Sb2O3和Ta2O5双施主掺杂对低电阻率的BaTiO3陶瓷PTC特性的影响。在Sb2O3和Ta2O5的摩尔分数分别为0.1%和0.01%时,得到了室温电阻率为4.59 Ω·cm,升阻比为3.4的优质PTCR陶瓷材料。通过XRD 、SEM显微结构分析;复阻抗测试,估计晶粒和晶界电阻值,探讨了Sb2O3和Ta2O5的作用机制。
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| 关 键 词： | 双施主掺杂 PTC特性 电阻率 升阻比 |
| 文章编号： | 1001-2028(2003)11-0035-03 |
Research on BaTiO3-based PTC Ceramics of Low Resistivity and High Ratio of lg (Rmax/Rmin) |
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| MAO Cui-ping,CHEN Yi-yu,HAN Xiao-dong,JIANG Tao.Research on BaTiO3-based PTC Ceramics of Low Resistivity and High Ratio of lg (Rmax/Rmin)[J].Electronic Components & Materials,2003,22(11):35-37. |
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| Authors: | MAO Cui-ping CHEN Yi-yu HAN Xiao-dong JIANG Tao |
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| Abstract: | The effect of double-donor doping of Sb2O3+Ta2O5 on PTC characteristic of the low resistivity BaTiO3-based ceramics was investigated. The resistivity is 4.59 W穋m at room temperature and ratio of lg(Rmax/Rmin) 3.4 when the content of Sb2O3 and Ta2O5 are 0.1 mol% and 0.01 mol% respectively. The mechanism of the effect of Sb2O3 and Ta2O5 on BaTiO3-based PTC ceramics was investigated by XRD, SEM etc. |
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| Keywords: | double-donor doping PTC characteristic resistivity ratio of lg(Rmax/Rmin) |
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