| Nb掺杂量对SrBiFeO基陶瓷NTC特性的影响 |
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| 引用本文： | 杨华斌,刘心宇,马家峰.Nb掺杂量对SrBiFeO基陶瓷NTC特性的影响[J].电子元件与材料,2010,29(10). |
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| 作者姓名： | 杨华斌 刘心宇 马家峰 |
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| 作者单位： | 1. 桂林电子科技大学广西信息材料重点实验室,广西桂林541004;中南大学材料学院,湖南长沙410083
2. 桂林电子科技大学广西信息材料重点实验室,广西桂林,541004 |
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| 基金项目： | 广西信息材料重点实验室主任基金资助项目 |
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| 摘 要： | 采用传统固相法,按化学式Sr0.65Bi1-xFe0.35NbxO3(x=0.01,0.02,0.05,0.10和0.20)制备了具有NTC特性的Nb掺杂SrBiFeO基陶瓷试样。研究了Nb掺杂量对其NTC特性的影响。结果表明:试样的ρ25和B25/85值随着Nb含量的增加都呈现增加趋势;在25~200℃的测试温区内,其电阻率–温度特性呈现近似的线性关系;当x为0.05时,线性关系较好,其中ρ25的值约为6700?·cm,B25/85值约为3540K。
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| 关 键 词： | SrBiFeO Nb掺杂 NTC效应 线性电阻率–温度关系 电性能 |
Influence of Nb doped amount on the NTC characteristics of SrBiFeO based ceramics |
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| YANG Huabin,LIU Xinyu,MA Jiafeng.Influence of Nb doped amount on the NTC characteristics of SrBiFeO based ceramics[J].Electronic Components & Materials,2010,29(10). |
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| Authors: | YANG Huabin LIU Xinyu MA Jiafeng |
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| Abstract: | The Nb-doped SrBiFeO based ceramic samples with NTC characteristics were prepared by conventional solid-state method according to Sr0.65Bi1-xFe0.35NbxO3(x = 0.01, 0.02, 0.05, 0.10 and 0.20). The effects of Nb doped amount on their NTC characteristics were investigated. The results indicate that with increase of Nb-doped amount, both values of ρ25 and B25/85 for obtained ceramic samples increase; the ceramic samples show good linear resistivity-temperature relationship in the temperature range of 25~200 ℃; when x is 0.05, the Nb-doped SrBiFeO based ceramic samples exhibit best linear resistivity-temperature relationship than others, having ρ25 of about 6 700 ?·cm and B25/85 value of about 3 540 K. |
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| Keywords: | SrBiFeO |
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