CO_2激光辐照对PZT-4陶瓷压电性能的影响  

Effect of CO_2 laser irradiation on piezoelectric properties of PZT-4 ceramics

作　　者：于永明[1] 赵艳[1] 蒋毅坚[1] 

机构地区：[1]北京工业大学激光工程研究院,北京100124

出　　处：《光电子．激光》2010年第7期1036-1039,共4页Journal of Optoelectronics·Laser

基　　金：国家自然科学基金资助项目(10674014);北京市科技新星计划资助项目(2006B11)

摘　　要：常温常压下,采用CO2激光辐照带有电极的PZT-4陶瓷片,当激光辐照时间分别为2、5和10 s时,在适当的激光功率密度下可使其压电应变常数d33从380 pC/N下降为零。系统地研究了激光功率密度和激光辐照时间对PZT-4陶瓷压电性能影响的规律。XRD、拉曼光谱和退火实验结果表明:CO2激光辐照使d33下降为零的原因是由于激光热效应导致PZT-4陶瓷的电畴排列失序,极化状态消失;而激光辐照未使其物相发生变化。The piezoelectric strain constant d33 of PZT-4 ceramics with electrode can drop from 380 pC/N to 0 by CO2 laser irradiation under suitable laser power density when the irradiation time is 2 s,5 s and 10 s at normal temperature and pressure.The relationships between d33 of PZT-4 ceramics and laser power density and laser irradiation time are investigated systematically.Based upon the characterization of XRD,Raman spectra and traditional annealing treatment,it is suggested the electric domains of irradiated PZT-4 ceramics become unordered and polarized state degenerated by thermal effect of CO2 laser irradiation,which causes its piezoelectric properties vanish with phase unchanged.

关 键 词：CO2激光辐照 PZT-4陶瓷 压电性能 退极化 

分 类 号：TN249[电子电信—物理电子学]