**3.1 Microstructure**

The FESEM micrographs of pure PVDF are given in **Figure 1a** and **b**. **Figure 1a** and **b** shows the presence of spherulites (the spherical semi-crystalline regions of the polymer). The micrographs of PVDF/n-BaTiO3 composites with different *f*BaTiO3 = 0.2 and *f*BaTiO3 = 0.60 are shown (**Figure 1c**–**f**). The ordered homogenous structures are also observable and is attributed to the recent novel method of cold pressing as evident from the sample with *f*BaTiO3 = 0.2 (**Figure 1c** and **d**). The spherulites present in the polymer are of diameter of the order of ~0.1 μm (**Figure 1a** and **b**). The *n*-BaTiO3 are also of the order of diameter of the spherulites as they are of size 100 nm, i.e. 0.1 μm, During cold pressing, the *n*-BaTiO3 clusters (**Figure 1c** and **d**) inside the polymer matrix, may have taken the typical shapes. For the sample with *f*BaTiO3 = 0.6 (**Figure 1e** and **f**), shows high level of heterogeneity, as lot of defects and dislocations has emerged in the structure and is responsible for giving a decrease in the ferroelectric & piezoelectric properties of the PF. **Figure 1** reveal slight agglomeration of BaTiO3 nanoparticles in the nanocomposites. The average filler size in the nanocomposites are of ~100 nm. The nano-dispersion of filler in the polymer matrix is well observed. It is also obvious that a variety of interfaces have occurred into the composites, which will be always useful in the storage of electrical charge at the interfaces The large amount of *n*-BaTiO3 into the PCC will also be responsible for giving better ferroelectric/piezoelectric/dielectric properties [2, 34–36].
