| 稀土Dy掺杂对BiFeO3陶瓷样品介电和铁电特性的影响 |
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| 引用本文： | 宋桂林,刘中山,付鹤鹏,夏存军,李超,常方高.稀土Dy掺杂对BiFeO3陶瓷样品介电和铁电特性的影响[J].河南师范大学学报(自然科学版),2011,39(1):61-64. |
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| 作者姓名： | 宋桂林 刘中山 付鹤鹏 夏存军 李超 常方高 |
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| 作者单位： | 1. 河南师范大学物理与信息工程学院,河南,新乡,453007;河南师范大学河南省光伏材料重点实验室,河南,新乡,453007
2. 河南师范大学物理与信息工程学院,河南,新乡,453007 |
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| 基金项目： | 国家自然科学基金，河南省重大科技攻关项目，河南师范大学青年科研基金 |
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| 摘 要： | 采用传统固相烧结法制备Bi1-xDyxFeO3(x=0, 0.05, 0.1, 0, 0.15)陶瓷样品.分别对样品的介电性能、铁电性进行了测量与分析.结果表明:Bi1-xDyxFeO3样品主衍射峰与纯相BiFeO3相吻合且具有良好的晶体结构;BiFeO3样品的介电常数、介电损耗均随Dy3+掺杂量的增加而逐渐增大.在测...
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| 关 键 词： | 介电常数 介电损耗 电滞回线 |
Effect of Dy Doping on Dielectric and Ferroelectric Properties in Multiferroic BiFeO3 Ceramics |
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| SONG Gui-lin,LIU Zhong-shan,FU He-peng,XIA Cun-jun,LI Chao,CHANG Fang-gao.Effect of Dy Doping on Dielectric and Ferroelectric Properties in Multiferroic BiFeO3 Ceramics[J].Journal of Henan Normal University(Natural Science),2011,39(1):61-64. |
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| Authors: | SONG Gui-lin LIU Zhong-shan FU He-peng XIA Cun-jun LI Chao CHANG Fang-gao |
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| Institution: | a,b(a.College of Physics & Information Engineering;b.Henan Key Laboratory of Photovoltail Materials Henan Normal University,Xinxiang 453007,China) |
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| Abstract: | Multiferroic Bi1-xDyxFeO3(x=0,0.05,0.1,0.15) ceramics are prepared by solid state reaction.The crystalline structure of all samples is characterized by using XRD.Frequency dependence of dielectric properties of all samples is measured with a HP4294A precision impedance analyzer.A Radiant RT 6000 ferroelectric analyzer is applied to measure the hysteresis loops of different samples.The results show that: X-ray diffraction is carried out to characterize the crystal structure and to detect any possible impurities present in these ceramics.For all the samples studied,the dielectric constant decrease and dielectric loss increase with increasing frequency in the range from 1 000 Hz to 1 MHz,can be expected from a typical orientational dielectric relaxation process.It has been found that both dielectric constant and dielectric loss are strongly dependent on the Dy3+ content.A saturated P-E hysteresis loop is obtained with Bi1-xDyxFeO3(x=0,0.05,0.1,0.15) samples,with a large remanent polarization(Pr) of 2.3μC/cm2 at an applied electric field of 28 kV/cm,indicating Dy3+doping enhances the ferroelectricity of BiFeO3 system. |
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| Keywords: | dielectric constant dielectric loss hysteresis loop |
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