使用助熔剂法生长了PbLa(ZrSnTi)O3弛豫反铁电单晶,使用偏光显微镜对单晶中的畴进行了观察.结果表明,在(001)面上,PbLa(ZrSnTi)O3单晶中存在[110]走向和[1(1)0]走向的畴,以及[100]走向和[010]走向的亚畴.对PbLa( ZrSnTi)O3单晶的成畴机制进行了分析,引入微区应力成畴机制解释了单晶中[110]走向和[1(1)0]走向的畴结构,而对[100]走向和[010]走向的亚畴结构则要同时考虑极性微区中自发极化的影响.
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