Structural and electrical characteristics of potential candidate lead-free BiFeO3-BaTiO3 piezoelectric ceramics
Structural and electrical characteristics of potential candidate lead-free BiFeO3-BaTiO3 piezoelectric ceramics
复制标题
DOI：
10.1063/1.4999375
复制
发表时间：
2017-10-28
影响因子：
3.2
通讯作者：
Wada, Satoshi
中科院分区：
文献类型：
--
作者：
Kim, Sangwook;Khanal, Gopal Prasad;Wada, Satoshi
研究了无铅BiFeO 3-BaTiO 3 [（1-x）BFxBT]压电系统的晶体结构和电学性能随BaTiO 3浓度的变化。在0.80BiFeO（3）-0.20BaTiO（3）体系中观察到了饱和的P-E滞后回线，而在0.70BiFeO（3）-0.30BaTiO（3）体系中观察到了滞后较小的应变-电场曲线，其应变滞后为16%，与PZT基压电陶瓷相当。同步辐射X射线衍射结果表明，BFBT体系的晶体结构为菱方晶系（x = 0.10-0.25）和准立方晶系（x = 0.30 ~ 0.40）。根据同步辐射变温X射线衍射测量结果和电学性质的研究，提出了BiFeO_3-BaTiO_3系统的结构相图。由AIP出版社出版。
The crystal structures and electrical properties of lead-free BiFeO3-BaTiO3 [(1-x) BFxBT] piezoelectric system are investigated as a function of BaTiO3 concentration. The well-saturated P-E hysteresis loop was observed in the 0.80BiFeO(3)-0.20BaTiO(3) composition system, while a less hysteretic strain-electric field curve was exhibited by the 0.70BiFeO(3)-0.30BaTiO(3) with a strain hysteresis of 16%, the value comparable to PZT-based piezoelectric ceramics. The crystal structures investigated under the synchrotron radiation X-ray diffraction exhibited a rhombohedral structure for BFBT system with x = 0.10-0.25 and a pseudo-cubic structure for BFBT system with x = 0.30-0.40. The structural phase diagram for the BiFeO3-BaTiO3 system is suggested based on the results of temperature-dependent synchrotron radiation X-ray diffraction measurement and investigated electrical properties. Published by AIP Publishing.