High thermally stable dielectric permittivity, polarization enhancement and electrostrictive properties in Zr-substituted bismuth sodium titanate lead-free ferroelectric ceramics
High thermally stable dielectric permittivity, polarization enhancement and electrostrictive properties in Zr-substituted bismuth sodium titanate lead-free ferroelectric ceramics
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锆取代钛酸铋钠无铅铁电陶瓷的高热稳定介电常数、极化增强和电致伸缩性能
DOI：
10.1016/j.ceramint.2020.06.062
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发表时间：
2020-10
影响因子：
5.2
通讯作者：
Liu Gang
中科院分区：
文献类型：
--
作者：
Jin Li;Huang Yunyao;Pang Jing;Zhang Leiyang;Jing Ruiyi;Guo Dong;Du Hongliang;Wei Xiaoyong;Xu Zhuo;Lu Xu;Wei Fangbin;Liu Gang
采用固相反应技术制备了x= 0.02 ~ 0.4的zr -取代（Bi0.5Na0.5）（Ti1−xZrx）O3（BNTZ）陶瓷，并对其结构、介电性能和铁电性能进行了系统的研究。x射线衍射结果表明，Zr4+离子可以在有限值下进入（Bi0.5Na0.5）TiO3（BNT）晶格，当xx超过0.1时，BNTZ陶瓷中出现二次相。在室温至500℃范围内，BNTZ陶瓷的介电常数随温度变化只有一个介电峰，且介电峰从0.02增加到0.4逐渐变宽。介电常数x= 0.4在室温~ 300℃范围内的变化小于±10%，说明该介电常数具有良好的热稳定性。极化-电场滞回线显示出极化增强，并获得最高的铁电性能inx= 0.04。从30℃到150℃，随着温度的升高，x= 0.04的电场致应变呈单调增加的趋势。在80 kV/cm时，达到0.268%的高应变水平。我们的研究结果表明，Zr4+离子的引入可以有效地调整BNT陶瓷的介电和铁电性能，并且x= 0.4成分可以在高温电容器器件中找到潜在的应用。
Zr-substituted (Bi0.5Na0.5)(Ti1−xZrx)O3(BNTZ) withx= 0.02–0.4 ceramics were prepared using solid-state reaction technique and their structural, dielectric and ferroelectric properties were investigated systematically. X-ray diffraction results suggest that Zr4+ion can enter the (Bi0.5Na0.5)TiO3(BNT) crystal lattices at a limited value and a secondary phase appears in BNTZ ceramics when thexexceeds 0.1. Temperature-dependent dielectric permittivities of BNTZ ceramics show only one dielectric peak from room temperature to 500 °C for each composition, and this dielectric peak becomes broad gradually asxincreases from 0.02 to 0.4. The permittivity ofx= 0.4 varies less than ±10% between room temperature and 300 °C, indicating a superior thermal stability of the permittivity. Polarization enhancement is revealed by the polarization-electric field hysteresis loops and highest ferroelectric properties are obtained inx= 0.04. The electric-field-induced strains ofx= 0.04 show a monotonous increase as temperature increases from 30 °C to 150 °C. At 80 kV/cm, a high strain level of 0.268% is achieved. Our results suggest that the introduction of Zr4+ion could effectively tailor the dielectric and ferroelectric properties of BNT ceramics andx= 0.4 composition could find potential application in high temperature capacitor devices.
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影响因子：
4
作者：
Gao, Jinghui;Xue, Dezhen;Ren, Xiaobing
通讯作者：
Ren, Xiaobing
影响因子：
32.5
作者：
Ting Zheng;Haijun Wu;Yuan Yuan-Yuan;X. Lv;Qi Li;Tian-Lu Men;Chunlin Zhao;D. Xiao;Jiagang Wu
通讯作者：
Ting Zheng;Haijun Wu;Yuan Yuan-Yuan;X. Lv;Qi Li;Tian-Lu Men;Chunlin Zhao;D. Xiao;Jiagang Wu
影响因子：
6.2
作者：
Haibo Zhang;C. Groh;Qi Zhang;W. Jo;K. Webber;J. Rödel
通讯作者：
Haibo Zhang;C. Groh;Qi Zhang;W. Jo;K. Webber;J. Rödel
影响因子：
3.2
作者：
Jo, Wook;Schaab, Silke;Roedel, Juergen
通讯作者：
Roedel, Juergen
影响因子：
3.9
作者：
Jing Shi;H. Fan;Xiao Liu;A. Bell
通讯作者：
Jing Shi;H. Fan;Xiao Liu;A. Bell