采用固相合成法制备PIMNT多晶料,通过垂直坩埚下降法生长出大尺寸PIMNT晶体;从晶体原坯不同部位切取系列晶片,应用X射线衍射旋转定向测试法,获得这些晶片的常规扫描图和蝴蝶图,从而对PIMNT晶体的单晶性做出分析表征.X射线粉末衍射分析表明PIMNT晶体为钙钛矿结构,系列晶片的常规扫描图显示整个晶体轴向自下至上均呈[111]结晶学方向,其蝴蝶图所示晶体的取向分散度为1.2°~1.5°,这些结果证实了所生长PIMNT晶体的单晶性.
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