Multiferroic properties of stretchable BiFeO3 nano-composite film

作者：Hwang J S; Cho J Y; Park S Y; Yoo Y J; Yoo P S; Lee B W; Lee Y P^*

来源：Applied Physics Letters, 2015, 106(6): 062902.

DOI：10.1063/1.4907220

We present a simple drop-casting method for preparing multiferroic nano-composite film where BiFeO3 (BFO) nanoparticles (NPs) were evenly dispersed into polyvinyl alcohol (PVA) polymer. BFO NPs used in this work were synthesized by the conventional sol-gel method, having diameter of tens of nm and being in good crystallinity. The BFO NPs were loaded into a highly insulating PVA polymer solution as filler. The multiferroic properties of the film reveal ferromagnetic ordering due to the uncompensated spiral ordering and saturated ferroelectric curves due to the cut-off of current leakage. Moreover, the prepared films show high flexibility and their multiferroicities are preserved well even in a high curved condition, reflecting the possibility for fabricating wearable devices based on multiferroic materials.

• 出版日期2015-2-9