摘要
采用改进的硬脂酸法制备了系列MZr0.5Ti0.5O3(M=La,Nd,Ce)陶瓷粉体材料。考察了MZr0.5Ti0.5O3的电滞回线,在此基础上通过电滞回线测试了CeZr0.5Ti0.5O3对温度和电场频率的响应情况。结果表明:LaZr0.5Ti0.5O3和CeZr0.5Ti0.5O3具有一定的电滞特性,但电滞回线并不完全对称;在本实验条件下,NdZr0.5Ti0.5O3不具备铁电性;温度升高,CeZr0.5Ti0.5O3的剩余极化强度也提高;测试电场频率降低,内偏场的数值也随之降低,而矫顽电场、剩余极化强度则明显提高。
This paper prepares a series of MZro.5 Ti0. 5O3 （M= La, Nd, Ce） ceramic puwder with improved stearic acid method, investigates electric hysteresis loop of MZr0.5Ti0.5O3 （M= La, Nd, Ce） and further tests the response of CeZr0. 5Ti0.5O3 to temperature and electric field frequency through electric hysteresis loop on this basis. The result shows that LaZr0.5Ti0.5O3 and CeZr0.5Ti0.5O3 have certain electric hysteresis characteristic, but electric hysteresis loop is not completely symmetric. Under conditions of this experiment, NdZr0.5Ti0.5O3 does not have ferroelectricity. With the increase of temperature, the remanent polarization of CeZr0.5Ti0.5O3 increases; with the decrease of test electric field frequency, the numerical value of bias field decreases; coercive electric field and remanent polarization greatly increase.
出处
《浙江理工大学学报（自然科学版）》
2014年第1期102-106,共5页
Journal of Zhejiang Sci-Tech University(Natural Sciences)
基金
国家自然科学基金(51076144)
浙江省自然科学基金(Z1110750)
现代纺织装备创新团队(2009R50018)
关键词
稀土陶瓷
电滞回线
频率响应
温度相应
rare earth ceramics
electric hysteresis loop
frequency response
temperature response
