摘要
在实验室条件下,对Pb[(Zn1/3Nb2/3)xZryTi1-x-y]O3进行了实验研究。改变Zr/Ti成分比和用La置换Pb以及改变Pb(Zn1/3Nb2/3)O3的摩尔分数等对压电系数d33和居里温度Tc都有明显的影响,用少量的La置换Pb能有效地提高d33值,与此同时,Tc显著下降,随着Pb(Zn1/3Nb2/3)O3的摩尔分数增加,d33值相应增大,Tc则相对下降幅度较小。当Zr/Ti比为33.5/36.5,x=0.34时,材料的性能较佳,d33=460×10-12C.N-1,Tc=280℃,机电耦合系数Kp=0.59,介电常数εTr=2 400。
At laboratory condition, performances of Pb[(Zn1/3Nb2/3),ZryTi1-x-y]O3 are studied experimently. Changing the ratio of Zr/Ti, replacing Pb with La and changing tool fraction of Pb ( Zn1/3 Nb2/3 )O3, piezoelectric coefficient d33 and Curie temperature Tc may change greatly. Replacing Pb with a few La, d33 may increase effectively, meanwhile, Tc decreases apparently. As tool fraction of Pb ( Zn1/3 Nb2n ) O3 increases,d33 value increases relatively, Tc decreases lightly. When the ratio of Zr/Ti equals to 33.5/36.5, x equals to 0.34, the performances of material are optimum. In this case, d33, Tc, Kp ( electro-mechanical coupling factor) and εr^T (permittivity) could be 460×10^-12C·N^-1,Tc=280℃,0.59,2400 respectively.
出处
《传感器与微系统》
CSCD
北大核心
2006年第7期21-23,共3页
Transducer and Microsystem Technologies
关键词
压电陶瓷
压电系数
居里温度
piezoeletric ceramic
piezoelectric coefficient
Curie temperature