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We report switching behavior between the ferroelectric β phase and the paraelectric α phase in polyvinylidene fluoridemultiwalled carbon nanotube (PVDF-CNT) nanocomposite. The PVDF-CNT nanocomposite thin films are prepared on Au/Si substrates using spin coating technique. Various characterization techniques reveal the interaction of PVDF with CNTs as a nucleating agent for nucleating ferroelectric β phase in PVDF. A wavelength-independent reversible phase transformation behavior is observed fordoi:10.1364/ome.8.002579 fatcat:cayouuooqveqfoviz2ivzd6gdy