複雜性氧化物應用於新興電子元件開發有很好的發展性，由於其物理性質可藉由外部刺激的調控達到廣泛的功能性。為了增加複雜性氧化物的應用性，對其物理性質調控的方法需求也隨之提高。而鐵電性質之光學控制屬於較新穎的研究題材，可以透過遠端非接觸式去調控鐵電疇。

In this study, we first illuminated one of the twin domain structures on (101)-oriented PZT thin film by 532 nm laser and then investigated its dynamic switching behaviors by piezoresponse force microscopy (PFM). In order to further reveal the nucleation mechanism, multiple illumination parameters are studied. With suitable conditions, the phase transition of the super-domains on (101)-oriented PZT thin film can be controlled by light. In the Raman spectrum, the difference of different Phases on the PZT film was found, and the gold plating on the PZT film makes the film Raman signal more prominent in the substrate signal. And shows difference reaction in surface potential mapping after 532 nm laser. This provided a new way to control the ferroelectric domain structure in complex oxides and open up new avenues for the nonvolatile memory devices.

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