Multiferroic properties of stretchable BiFeO3 nano-composite film
Hwang, J.S., Cho, J.Y., Park, S.Y., Yoo, Y.J., Yoo, P.S., Lee, B.W., Lee, Y.P.
Applied Physics Letters, 106(6), 062902(2015)
DOI: 10.1063/1.4907220
Abstract
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 ba