“…[4][5][6][7] Ferroelectric ceramics such as lead-free barium titanate (BaTiO 3 , BTO) have long been of interest as llers for high dielectric composites. 8,9 This is due to their high dielectric constant (as high as 7000), 10 low dissipation, impressive piezoelectric and pyroelectric properties. 11,12 The effects of size, shape (e.g., nanoparticles, nanorods, nanowires, nanocubes), crystal phase (e.g., cubic, tetragonal, orthorhombic, rhombohedral), matrix, surface conditions, porosity, ller loading and distributions have been discussed intensively in the literature.…”