Effect of External Fields on the Switching Current in (Ba0.97Ca0.03) (Zr0.18Ti0.82) O3 Ceramics
Lead-free (Ba0.97Ca0.03) (Zr0.18Ti0.82) O3 (BCZT) ceramic is prepared by sol-gel technique.The sample shows a pure perovskite structure through the XRD pattern.Well-developed grain morphology and a dense microstructure are acquired at an optimistic sintering temperature(~1330℃).The BCZT ceramic shows a surprisingly high piezoelectric coefficient of d33=675 prn/V.The switching current curves are acquired in the different external fields by TF-2000 Ferroelectric Analyzer.It is found that with increasing the temperature, there is a decrease in the coercive field (Ec), and with increasing the electric field, there is an increase in the switching current obviously.Sintering temperature has an effect on switching current.The effect of temperature and electrical field on switching current is analyzed from viewpoint of the energy.
Sol-gel preparation Piezoelectric coefficient Ceramics Switching current Domain
Jian Shao Xiang-yun Deng Xiao-long Zhang
College of Physics and Electronic Information, Tianjin Normal University, Tianjin 300387, China College of Physics and Electronic Information, Tianjin Normal University, Tianjin 300387, China ; Ke
国际会议
The Eighth China National Conference on Functional Materials and Applications(第八届中国功能材料及其应用学术会议)
哈尔滨
英文
228-234
2013-08-23（万方平台首次上网日期，不代表论文的发表时间）