La掺杂对(Bi<sub>1.5</sub>Zn<sub>0.5</sub>)(Ti<sub>1.5</sub>Nb<sub>0.5</sub>)O<sub>7</sub>陶瓷组织和介电性能的影响

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La掺杂对(Bi_1.5Zn_0.5)(Ti_1.5Nb_0.5)O₇陶瓷组织和介电性能的影响

金强, 黄金亮, 杨留栓, 李谦

文章导航 > 材料开发与应用 > 2005 > 20(2): 16-19

金强, 黄金亮, 杨留栓, 李谦. La掺杂对(Bi1.5Zn0.5)(Ti1.5Nb0.5)O7陶瓷组织和介电性能的影响[J]. 材料开发与应用, 2005, 20(2): 16-19. doi: 10.19515/j.cnki.1003-1545.2005.02.005

引用本文:

金强, 黄金亮, 杨留栓, 李谦. La掺杂对(Bi_1.5Zn_0.5)(Ti_1.5Nb_0.5)O₇陶瓷组织和介电性能的影响[J]. 材料开发与应用, 2005, 20(2): 16-19. doi: 10.19515/j.cnki.1003-1545.2005.02.005

JIN Qiang, HUANG Jin-liang, YANG Liu-shuan, LI Qian. Effect of La-doped on Microstructure and Dielectric Properties of (Bi1.5Zn0.5)(Ti1.5Nb0.5)O7 Ceramics[J]. Development and Application of Materials, 2005, 20(2): 16-19. doi: 10.19515/j.cnki.1003-1545.2005.02.005

Citation:

JIN Qiang, HUANG Jin-liang, YANG Liu-shuan, LI Qian. Effect of La-doped on Microstructure and Dielectric Properties of (Bi_1.5Zn_0.5)(Ti_1.5Nb_0.5)O₇ Ceramics[J]. Development and Application of Materials, 2005, 20(2): 16-19. doi: 10.19515/j.cnki.1003-1545.2005.02.005

金强, 黄金亮, 杨留栓, 李谦. La掺杂对(Bi1.5Zn0.5)(Ti1.5Nb0.5)O7陶瓷组织和介电性能的影响[J]. 材料开发与应用, 2005, 20(2): 16-19. doi: 10.19515/j.cnki.1003-1545.2005.02.005

引用本文:

金强, 黄金亮, 杨留栓, 李谦. La掺杂对(Bi_1.5Zn_0.5)(Ti_1.5Nb_0.5)O₇陶瓷组织和介电性能的影响[J]. 材料开发与应用, 2005, 20(2): 16-19. doi: 10.19515/j.cnki.1003-1545.2005.02.005

JIN Qiang, HUANG Jin-liang, YANG Liu-shuan, LI Qian. Effect of La-doped on Microstructure and Dielectric Properties of (Bi1.5Zn0.5)(Ti1.5Nb0.5)O7 Ceramics[J]. Development and Application of Materials, 2005, 20(2): 16-19. doi: 10.19515/j.cnki.1003-1545.2005.02.005

Citation:

JIN Qiang, HUANG Jin-liang, YANG Liu-shuan, LI Qian. Effect of La-doped on Microstructure and Dielectric Properties of (Bi_1.5Zn_0.5)(Ti_1.5Nb_0.5)O₇ Ceramics[J]. Development and Application of Materials, 2005, 20(2): 16-19. doi: 10.19515/j.cnki.1003-1545.2005.02.005

La掺杂对(Bi_1.5Zn_0.5)(Ti_1.5Nb_0.5)O₇陶瓷组织和介电性能的影响

doi: 10.19515/j.cnki.1003-1545.2005.02.005

河南科技大学材料科学与工程学院, 河南洛阳 471003

基金项目:

河南省高校创新人才基金资助

中图分类号: TQ174.1
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出版历程
- 收稿日期: 2004-05-31
- 网络出版日期: 2024-06-15

Effect of La-doped on Microstructure and Dielectric Properties of (Bi_1.5Zn_0.5)(Ti_1.5Nb_0.5)O₇ Ceramics

Material Science and Engineering College, Henan University of Science and Technology, Luoyang 471003, China

摘要: 研究了La³⁺取代的（Bi_1.5Zn_0.5）（Ti_1.5Nb_0.5） O₇基陶瓷（Bi_1.5-xLa_xZn_0.5）（Ti_1.5Nb_0.5） O₇（0.0 ≤ x ≤ 1 2，BLZNT）的结构与介电性能。采用传统的固相反应法制备了陶瓷样品，用XRD、SEM分析了样品的组织。在整个取代范围内，La³⁺取代的样品基本保持单一烧绿石相，稳定范围由容忍因子（R_A/R_B值）来确定；同时，随着La³⁺取代量的增加，晶胞常数先增后减。介电性能随结构变化而变化，其中介电性能为：ε=130~170，tanδ=~0.9×10^-3（1MHz），并且掺杂La优化了BLZNT-x样品高频端（>100kHz）的频谱特性。
- 掺杂 /
- 烧绿石 /
- 容忍因子 /
- 介电性能
Abstract: The structure and dielectric properties of (Bi_1.5Zn_0.5)(Ti_1.5Nb_0.5)O₇-based ceramics with Bi³⁺ substituted by La³⁺ were investigated.(Bi_1.5-xLa_xZn_0.5)(Zn_0.5Nb_1.5)O₇samples were prepared by conventional method.The X-ray diffraction and SEM were used to analyze the microstructure.The La-doped samples held primarily pyrochlore single-phase on the whole field, and its stable range was determined by the tolerance factor (R_A/R_B values).With the increase of amount of La³⁺ substitution, crystal cell parameters showed a trend from ascent to descent.The dielectric properties varied with the microstructure.The dielectric properties of BLZNT-x samples exhibited as:ε=130~170,tanδ=0.35-0.9×10^-3at 1 MHz,and the frequency characteristics at high end (＞100kHz) were optimized through the La-doping.
- Dope /
- Pyrochlore /
- Tolerance factor /
- Dielectric properties

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