Magnetoelectric 0–1 composites comprising CoFe2O4 (CFO) nanoparticles in a polyvinylidene fluoride
(PVDF) polymer-fibre matrix have been prepared by electrospinning. The average diameter of the electrospun
composite fibres is ∼325 nm, independent of the nanoparticle content, and the amount of the crystalline
polar β phase is strongly enhanced when compared to pure PVDF polymer fibres. The piezoelectric
response of these electroactive nanofibres is modified by an applied magnetic field, thus evidencing the
magnetoelectric character of the CFO/PVDF 0–1 composites.