| 铌掺杂Bi3.15Nd0.85Ti3O12陶瓷材料铁电性能 |
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| 引用本文： | 陆志娟,崔彩娥,黄平. 铌掺杂Bi3.15Nd0.85Ti3O12陶瓷材料铁电性能[J]. 重庆理工大学学报(自然科学版), 2009, 23(6): 107-110 |
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| 作者姓名： | 陆志娟 崔彩娥 黄平 |
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| 作者单位： | 太原理工大学理学院; |
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| 基金项目： | 山西省自然科学基金资助项目(2007011061);;山西省科技攻关项目(2007031141) |
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| 摘 要： | 采用高温固相法制备了铌掺杂Bi3.15Nd0.85Ti3O12铁电材料.利用X射线衍射仪、拉曼光谱仪分析样品物相结构,阻抗分析仪和铁电性能测量仪测试电性能.发现制备的陶瓷材料均为单一的层状钙钛矿结构,反映TiO6八面体内部振动情况的850cm-1处拉曼峰随着Nb掺杂量的增加明显上移,表明:TiO6参与取代过程,Ti4+被具有较小离子半径的Nb5+取代.Nb的引入使样品的介电损耗明显降低,居里温度呈下降趋势.随着Nb掺杂量的增加,材料的剩余极化强度先增大后减小,当x=0.03时2Pr达到极大值19.3μC/cm2,矫顽场为57.5 kV/cm.
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| 关 键 词： | Bi3.15Nd0.85Ti3-xNbxO12+x/2 拉曼频移 激活能 铁电性能 |
Ferroelectric Properties of Nb-doped Bi_(3.15)Nd_(0.85)Ti_3Ov_(12) Ceramics |
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| LU Zhi-juan,CUI Cai-e,HUANG Ping. Ferroelectric Properties of Nb-doped Bi_(3.15)Nd_(0.85)Ti_3Ov_(12) Ceramics[J]. Journal of Chongqing University of Technology(Natural Science), 2009, 23(6): 107-110 |
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| Authors: | LU Zhi-juan CUI Cai-e HUANG Ping |
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| Affiliation: | School of Science;Taiyuan University of Technology;Taiyuan 030024;China |
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| Abstract: | Nb-doped Bi3.15 Nd0.85Ti3-xNbxO12+ x /2 layer-structured ferroelectric ceramics are prepared by the solid-state reaction method.The microstructures of the samples are analyzed by X-ray diffraction and Raman spectra.The dielectric and ferroelectric properties of samples are investigated.It was found that all the polycrystalline ceramics have almost a single phase.The Raman phonon mode at 850cm-1 shifts higher with the increase of niobium content,which originates mainly from the vibrations of atoms inside the... |
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| Keywords: | Bi3.15Nb0.85Ti3-xNbxO12+x/2 Raman shift activation energy ferroelectric property |
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