摘要
采用熔剂-坩埚下降法生长了91%Pb(Zn1/3Nb2/3)O3-9%PbTiO3(PZNT91/9)(摩尔分数)弛豫铁电单晶,PbO助熔剂摩尔分数控制在50%左右。所得晶体被PbO助熔剂包裹,将其浸泡在热HNO3中1～2天即可除去PbO。晶体呈浅黄色,具有明显的结晶学生长面。晶体沿(001)面切出数片,晶片质量明显好于通气Bridgman法生长的PZNT单晶。偏光显微镜可观察到71°、90°、180°畴或微畴区。晶片极化条件为:垂直于C面施加1kV/mm的电场并保持10～15min。
Relaxor ferroelectric single crystal 91%Pb(Zn1/3Nb2/3)O39%PbTiO3 (PZNT91/9) was grown by fluxBridgman method using 50 mol% PbO as flux. Asgrown PZNT single crystal was covered with PbO flux and was separated from the flux by leaching in hot HNO3 for 1～2 days. The crystal had a pale yellow color and exhibited obvious growth facets. Several <001>cut plates were obtained and their quality was better than that of PZNT plates grown by gascooling Bridgman method. 71°, 90° and 180° domains and some microdomains were observed by polarized light microscope. The crystal plates could be poled by 1 kV/mm for 10～15 min.
出处
《压电与声光》
CSCD
北大核心
2003年第4期315-317,共3页
Piezoelectrics & Acoustooptics
基金
中国科学院重大项目资助(98JC14017)
上海市自然科学重点基金资助(02DJ14041)
