| 直流偏压对PMZNT弛豫铁电陶瓷介电性能的影响 |
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| 引用本文： | 张勇,桂红,桂治轮,李龙土.直流偏压对PMZNT弛豫铁电陶瓷介电性能的影响[J].无机材料学报,1998,13(2):234-238. |
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| 作者姓名： | 张勇 桂红 桂治轮 李龙土 |
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| 作者单位： | 清华大学材料科学与工程系; 北京100084 |
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| 摘 要： | 对PMN－PZN－PT系弛豫铁电陶瓷的直流偏压特性进行了研究，直流偏压使介电常数的最大值εmax下降，介电常数最大值对应的温度Tmax升高，频率色散受到压抑．同时使介温曲线变得平坦．应用冻结偶极子、慢偶极子的概念，对实验结果进行了分析．
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| 关 键 词： | 直流偏压 铌镁酸铅－铌锌酸铅 冻结偶极子 慢偶极子 |
| 收稿时间： | 1997-3-31 |
| 修稿时间： | 1997-5-14 |
Effects of DC Bias on the Dielectric Properties of PMZNT Relaxor Ferroelectrics |
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| ZHANG Yong,GUI Hong,GUI Zhi-Lun,LI LOng-Tu.Effects of DC Bias on the Dielectric Properties of PMZNT Relaxor Ferroelectrics[J].Journal of Inorganic Materials,1998,13(2):234-238. |
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| Authors: | ZHANG Yong GUI Hong GUI Zhi-Lun LI LOng-Tu |
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| Affiliation: | Department of Materials Science and Engineering; Tsinghua University Beijing 100084 China |
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| Abstract: | The DC bias field dependence characteristics of the PMN-PZN-PT relaxor ferroelectric ceramics were investigated. The experiments revealed that the DC bias field reduces the dielectric constant, increases the temperature of dielectric maximum, and supresses the frequency dispersion.Based on the concept of u frozen dipole" and " slow dipole ", These results were discussed. |
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| Keywords: | DC bias lead magnesium zinc niobate ceramics frozen dipole slow dipole |
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