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[1]骆建国,朱　蒙,龙春艳,等.Sr1-x（YK）0.25xBa0.5xBi4Ti4O15陶瓷的制备及其介电性研究[J].武汉工程大学学报,2018,40(03):288-291.[doi:10. 3969/j. issn. 1674?2869. 2018. 03. 011]
　LUO Jianguo,ZHU Meng,LONG Chunyan,et al.Preparation and Dielectric Properties of Sr1-x（YK）0.25xBa0.5xBi4Ti4O15 Ceramics[J].Journal of Wuhan Institute of Technology,2018,40(03):288-291.[doi:10. 3969/j. issn. 1674?2869. 2018. 03. 011]
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《武汉工程大学学报》[ISSN:1674-2869/CN:42-1779/TQ]

卷:
40
期数:
2018年03期
页码:
288-291
栏目:
材料科学与工程
出版日期:
2018-06-26

文章信息/Info

Title:
Preparation and Dielectric Properties of Sr1-x（YK）0.25xBa0.5xBi4Ti4O15 Ceramics
文章编号:
20180311
作者:
骆建国1; 2; 朱　蒙1; 2; 龙春艳1; 2; 徐　军*1; 2
1. 武汉工程大学材料科学与工程学院，湖北 武汉 430205；2. 等离子化学与新材料湖北省重点实验室（武汉工程大学），湖北 武汉 430205
Author(s):
LUO Jianguo1; 2; ZHU Meng1; 2; LONG Chunyan1; 2; XU Jun *1; 2
1. School of Materials Science and Engineering，Wuhan Institute of Technology，Wuhan 430205，China；2. Hubei Key Laboratory of Plasma Chemical and Advanced Materials（Wuhan Institute of Technology），Wuhan 430205，China
关键词:
铁电陶瓷; 元素置换; 居里温度; Sr1-x（YK）0.25xBa0.5xBi4Ti4O15; 介电性能
Keywords:
ferroelectric ceramics;  elemental substitution;  Curie temperature;  Sr1-x（YK）0.25xBa0.5xBi4Ti4O15;  dielectric properties
分类号:
TM282
DOI:
10. 3969/j. issn. 1674?2869. 2018. 03. 011
文献标志码:
A
摘要:
为研究铋层状钙钛矿结构（Aurivillius相）铁电陶瓷居里温度（Tc）及介电性能，采用传统固相反应法在1 100 ℃烧结5 h制备了不同价态元素K+、Ba2+、Y3+协同置换A位Sr元素的Sr1-x（YK）0.25xBa0.5xBi4Ti4O15陶瓷，利用X射线衍射仪表征不同置换量陶瓷的物相，结果表明制备的陶瓷均为Aurivillius相，无杂相产生。采用精密阻抗分析仪测量了陶瓷在不同频率下的介电温谱，结果表明，所有陶瓷样品均表现出铁电相变，随替换量增多，陶瓷的居里温度Tc由518.2 ℃降低到514.5 ℃，Tc处的介电常数极大值由2 350下降到2 000。研究结果表明，表征结构失稳性的容忍因子参数对Sr1-x（YK）0.25xBa0.5xBi4Ti4O15陶瓷铁电相变有重要影响。
Abstract:
To study the impacting factors of the ferroelectric Curie temperature（Tc） and dielectric properties of bismuth layered perovskite-type ferroelectric ceramics，K+，Ba2+ and Y3+ co-substituted SrBi4Ti4O15 ceramics （Sr1-x（YK）0.25xBa0.5xBi4Ti4O15） were synthesized by conventional solid state reaction at 1 100 ℃ for 5 h. X-ray diffraction results showed that all the ceramics were single phase without impurity. The dielectric temperature spectrum measured by precision impedance analyzer showed a ferroelectric transition for all samples，Tc decreasing from 518.2 ℃ to 514.5 ℃ and the dielectric constant at Tc decreasing from 2 350 to 2 000 as the amount of elemental substitution （x） increased. The tolerance factor characterizating structural instability of bismuth layered perovskite structure plays an important role in the ferroelectric phase transition in the Sr1-x（YK）0.25xBa0.5xBi4Ti4O15 ceramics.

参考文献/References:

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备注/Memo

备注/Memo:

收稿日期：2018-01-31基金项目：武汉工程大学第八届研究生教育创新基金（CX2016022）作者简介：骆建国，硕士研究生。 E-mail：[email protected]*通讯作者：徐　军，博士，教授。E-mail：[email protected]引文格式：骆建国，朱蒙，龙春艳，等. Sr1-x（YK）0.25xBa0.5xBi4Ti4O15陶瓷的制备及其介电性研究［J］. 武汉工程大学学报，2018，40（3）：288-291.
更新日期/Last Update: 2018-06-28