Enhanced ferroelectric and dielectric properties in (La0.7Ca0.3)MnO3-buffered (Bi0.5Na0.5)TiO3-based lead-free thin film by pulsed laser deposition

► LCMO was introduced to promote the crystalline and growth of BNBMT film. ► Large remnant polarization (∼20 μC/cm2) comparable to the bulk one was obtained. ► Low dielectric loss was obtained.